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Contents
- The climate of Biak
- The best time to visit Biak
- The worst time to visit Biak
- Spring weather in Biak
- Summer weather in Biak
- Autumn weather in Biak
- Winter weather in Biak
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Biak
Biak, stepping just south of the equator in Indonesia, manifests a tropical rainforest climate, typically represented by the Köppen climate classification symbol 'Af'. Owing to its geographical locale, the town enjoys a fairly warm to hot climate throughout the year. Additionally, Biak endures a high level of humidity and heavy rainfall throughout every month, a characteristic trait of its tropical nature.
Significantly, the annual temperature high averages lingering around 29.4°C (84.9°F) to 30°C (86°F), with the lowest averages from 25.5°C (77.9°F) to 26.4°C (79.5°F). The subtle change in temperature, barely varying by a few degrees, makes Biak's climate relatively stable. True to its 'rainforest' moniker, Biak sees an impressive annual rainfall between 125mm (4.92") to 243mm (9.57") per month. Consequently, the relative humidity remains persistently high, wavering slightly between 77% to 80%. This high level of moisture retains the year-round tropical ambiance and lush green landscapes.
Sea temperature displays an equally minuscule difference, maintaining a constant 29°C (84.2°F) throughout the year, with an exception for November, when it rises slightly to 30°C (86°F). Sunshine hours range from 7.7h to 9.1h, delivering an ample display of daylight from 12.1h to 12.2h daily. Wind speed ranges from 7.5km/h (4.7mph) to 10km/h (6.2mph), implying that heavy, gusty winds are infrequent. The UV index indicates it remains at level 7 for ten months in the year, dropping slightly to 6 in February and December, hinting at reasonably consistent sun exposure.
Significantly, the annual temperature high averages lingering around 29.4°C (84.9°F) to 30°C (86°F), with the lowest averages from 25.5°C (77.9°F) to 26.4°C (79.5°F). The subtle change in temperature, barely varying by a few degrees, makes Biak's climate relatively stable. True to its 'rainforest' moniker, Biak sees an impressive annual rainfall between 125mm (4.92") to 243mm (9.57") per month. Consequently, the relative humidity remains persistently high, wavering slightly between 77% to 80%. This high level of moisture retains the year-round tropical ambiance and lush green landscapes.
Sea temperature displays an equally minuscule difference, maintaining a constant 29°C (84.2°F) throughout the year, with an exception for November, when it rises slightly to 30°C (86°F). Sunshine hours range from 7.7h to 9.1h, delivering an ample display of daylight from 12.1h to 12.2h daily. Wind speed ranges from 7.5km/h (4.7mph) to 10km/h (6.2mph), implying that heavy, gusty winds are infrequent. The UV index indicates it remains at level 7 for ten months in the year, dropping slightly to 6 in February and December, hinting at reasonably consistent sun exposure.
The best time to visit Biak
Given the tropical rainforest climate, designating the "best" time to visit Biak solely hinges on individual preferences for certain weather conditions. Suppose individuals appreciate bright, sunny days interspersed with moderate rainfall. September and October, when rainfall drops to about 128mm (5.04") and 125mm (4.92") respectively, and sunshine hours increase up to 8.2h and 8.4h, are particularly appealing.
The worst time to visit Biak
Those who wish to avoid heavy rainfall might steer clear of the town from January to March. During these months, Biak experiences its highest rainfall, going up to 243mm (9.57") in March. However, bear in mind that rainfall is a constant companion in Biak, owing to its rainforest climate; hence avoiding monsoon-like conditions might not be feasible.
Spring weather in Biak
While the concept of spring does not apply in a tropical climate like Biak's, if transposing the same timeframe i.e., March to May, the town witnesses an average high temperature around 29.7°C (85.5°F) to 29.8°C (85.6°F) and a low from 26.1°C (79°F) to 26.3°C (79.3°F). Rainfall remains heavy, with March seeing the most at 243mm (9.57"), slightly decreasing to 210mm (8.27") in April and 164mm (6.46") in May.
Summer weather in Biak
Similarly, Biak does not traditionally experience "summer," but during June to August, temperature highs stay stable at 29.3°C (84.7°F) in June and August, with a slight dip to 29.1°C (84.4°F) in July. The lowest temperatures show little variation, ranging from 25.5°C (77.9°F) to 25.9°C (78.6°F). Rainfall dips slightly to a range of 181mm (7.13") to 190mm (7.48").
Autumn weather in Biak
During September to November, considered autumn in many regions, Biak continues to experience tropical weather patterns. High temperatures range from 29.2°C (84.6°F) to 30°C (86°F), while the lows fluctuate from 25.5°C (77.9°F) to 26.4°C (79.5°F). A noticeable drop in rainfall to 128mm (5.04") in September and 125mm (4.92") in October can be observed before it rises again to 170mm (6.69") in November.
Winter weather in Biak
Come December, typically the "winter" in various places, Biak hardly witnesses any change in its tropical character. High temperatures average around 29.7°C (85.5°F), with low temperatures at 26.2°C (79.2°F). Rainfall once again sees an increased 170mm (6.69"), but the humidity decreases slightly to 78%. It is essential to note, despite the universal "winter" term, Biak, like other tropical regions, remains warm throughout the year.
Weather in January
Biak, Indonesia welcomes the year with a consistent tropical climate, with humid conditions and plenty of rainfall. January is similar to most other months in this coastal city. Walking around Biak at the start of the year might require an umbrella, as the city experiences 200mm (7.87") of rainfall over almost 29 days of the month. Weather in January »
Weather in February
As February sets in, Biak's weather remains largely unchanged from January. Though there is a slight increase in rainfall at 201mm (7.91") compared to the previous month, conditions continue to be delightfully tropical. The city's tropical foliage flourishes under the still-prevailing high humidity. Weather in February »
Weather in March
March brings a significant boost in rainfall that sets it apart from the preceding months, with precipitation reaching 243mm (9.57"). Simultaneously, there's a noticeable increase in sea temperature and relative humidity too. Despite these shifts, Biak's tropical weather persists, characterized by warm temperatures, abundant humidity, and regular rainfall. Weather in March »
Weather in April
With the advent of April, Biak experiences a reduced rainfall from March, dropping to 210mm (8.27"), though the city remains in its wet season pattern. Amid the frequent showers, the climate still offers ample sunshine and daylight hours, which is typical of its tropical location. Weather in April »
Weather in May
A noticeable shift in Biak's weather becomes evident in May, as rainfall drops to 164mm (6.46"), signaling the start of a drier phase over the coming few months. A marked decrease in cloud cover is also observed, causing an incrementally increased amount of sunlight received. Weather in May »
Weather in June
June’s weather continues along the path set by May, with rainfall decreasing again to 190mm (7.48"). Despite June being one of the drier months, there is a small increase in humidity, hinting at the tropical environment of Biak. Weather in June »
Weather in July
Despite a decrease in rainfall from June to 181mm (7.13"), July is consistent with the previous couple of months in its display of a less rainy, yet characteristically tropical climate. The relative humidity remains high, while average low and high temperatures show small fluctuations typical of a largely uniform tropical climate. Weather in July »
Weather in August
August, while following the established pattern of the previous months, boasts the year’s highest sunlight figures with sun shining for approximately 9.1 hours per day. Simultaneously, rainfall decreases to 185mm (7.28"), slightly lower than in July. Weather in August »
Weather in September
September brings the least rainfall of the year, dropping down to 135mm (5.31"), which is notably lower than in August. This decrease in rainfall creates a drier environment, though it does not significantly alter the tropical nature of the climate. Weather in September »
Weather in October
The weather in October exhibits slight changes in comparison to September. Rainfall increases slightly to 128mm (5.04"), but it continues to fall on the lesser side overall, making way for a pleasantly temperate climate. October follows the climatic scheme of September with a slight increase in rain observed. Weather in October »
Weather in November
As November rolls in, Biak encounters 125mm (4.92") rainfall, with a slight decrease seen from October, maintaining the mild phase of the wet season. The climate characteristics remain persistently tropical, with high relative humidity, ample daylight hours, and uniform sea temperature. Weather in November »
Weather in December
Coming to the close of the year, December presents an increase in rainfall to 170mm (6.69"), indicating the transition back to wetter months. Alongside, there's a mild decrease in sunshine hours; however, daylight remains consistent with the past months. Weather in December »
[Resources]Frequently asked questions
How much does it rain in Biak?
In Biak, during the entire year, the rain falls for 323.4 days and collects up to 2132mm (83.94") of precipitation.
What months are the sea coldest in Biak?
January through October and December, with an average sea temperature of 29°C (84.2°F), are months with the coldest seawater in Biak, Indonesia.
What are the months with the highest UV index in Biak?
The months with the highest UV index in Biak are January, March through November, with an average maximum UV index of 7.
What is the month with the least sunshine in Biak?
February and June, with an average of 7.7h of sunshine, are months with the least sunshine in Biak, Indonesia.
When is the lowest UV index in Biak?
The months with the lowest UV index in Biak are February and December, with an average maximum UV index of 6.
What is the most humid month in Biak?
March is the most humid month, with an average relative humidity of 80%.
What is the rainiest month in Biak?
The month with the most rainfall in Biak, Indonesia, is March, when the rain falls for 28.9 days and typically aggregates up to 243mm (9.57") of precipitation.
What is the month with the shortest days in Biak?
June has the shortest days of the year in Biak, Indonesia, with an average of 12h and 6min of daylight.
What time of the year is the coldest in Biak?
The coldest month in Biak is July, with an average high-temperature of 29.1°C (84.4°F) and an average low-temperature of 25.6°C (78.1°F).
What month has the most sunshine in Biak?
August has the most sunshine of the year in Biak, with an average of 9.1h of sunshine.
What is the least humid month in Biak?
The least humid month is October, with an average relative humidity of 77%.
What is the warmest month in Biak?
In Biak, November is the warmest month, with temperatures averaging a high of 30°C (86°F) and a low of 26.4°C (79.5°F).
What is the driest month in Biak?
The month with the least rainfall is November, when the rain falls for 23.2 days and typically collects 125mm (4.92") of precipitation.
When is the sea warmest in Biak?
The month with the warmest seawater is November, with an average sea temperature of 30°C (86°F).
When are the longest days in Biak?
The month with the longest days in Biak, Indonesia, is December, with an average of 12h and 12min of daylight.
Is there Daylight Saving Time (DST) in Biak?
Biak does not utilize Daylight Saving Time (DST). WIT timezone is used over the entire year.
Average temperature
Biak, Indonesia
The warmest month (with the highest average high temperature) is November (30°C).
The month with the lowest average high temperature is July (29.1°C).
The month with the highest average low temperature is November (26.4°C).
The coldest months (with the lowest average low temperature) are August and September (25.5°C).
Average pressure
Biak, Indonesia
- Average pressure in January:
1008.2mbar - Average pressure in February:
1008.8mbar - Average pressure in March:
1008.8mbar - Average pressure in April:
1008.8mbar - Average pressure in May:
1008.8mbar - Average pressure in June:
1009mbar
- Average pressure in July:
1008.9mbar - Average pressure in August:
1009.3mbar - Average pressure in September:
1009.3mbar - Average pressure in October:
1008.9mbar - Average pressure in November:
1007.8mbar - Average pressure in December:
1007.5mbar
The months with the highest atmospheric pressure are August and September (1009.3mbar).
The month with the lowest atmospheric pressure is December (1007.5mbar).
Average wind speed
Biak, Indonesia
- Average wind speed in January:
9.1km/h - Average wind speed in February:
9.5km/h - Average wind speed in March:
10km/h - Average wind speed in April:
8.4km/h - Average wind speed in May:
7.7km/h - Average wind speed in June:
8.1km/h
- Average wind speed in July:
8.3km/h - Average wind speed in August:
7.5km/h - Average wind speed in September:
8.1km/h - Average wind speed in October:
8.2km/h - Average wind speed in November:
8.6km/h - Average wind speed in December:
8.8km/h
The windiest month (with the highest average wind speed) is March (10km/h).
The calmest month (with the lowest average wind speed) is August (7.5km/h).
Average humidity
Biak, Indonesia
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (77%).
Average rainfall
Biak, Indonesia
- Average rainfall in January:
200mm - Average rainfall in February:
201mm - Average rainfall in March:
243mm - Average rainfall in April:
210mm - Average rainfall in May:
164mm - Average rainfall in June:
190mm
- Average rainfall in July:
181mm - Average rainfall in August:
185mm - Average rainfall in September:
135mm - Average rainfall in October:
128mm - Average rainfall in November:
125mm - Average rainfall in December:
170mm
The wettest month (with the highest rainfall) is March (243mm).
The driest month (with the least rainfall) is November (125mm).
Average rainfall days
Biak, Indonesia
- Average rainfall days in January:
29 days - Average rainfall days in February:
25.8 days - Average rainfall days in March:
28.9 days - Average rainfall days in April:
28.5 days - Average rainfall days in May:
28 days - Average rainfall days in June:
28.3 days
- Average rainfall days in July:
28.3 days - Average rainfall days in August:
28.2 days - Average rainfall days in September:
25.8 days - Average rainfall days in October:
22.8 days - Average rainfall days in November:
23.2 days - Average rainfall days in December:
26.6 days
The month with the highest number of rainy days is January (29 days).
The month with the least rainy days is October (22.8 days).
Average sea temperature
Biak, Indonesia
The best month for swimming (with the highest average sea temperature) is November (30°C).
The coldest months (with the lowest average sea temperature) are January, February, March, April, May, June, July, August, September, October and December (29°C).
Average daylight / Average sunshine
Biak, Indonesia
- Average daylight in January:
12h and 1min - Average daylight in February:
12h and 1min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 1min - Average daylight in May:
12h and 1min - Average daylight in June:
12h and 1min
- Average daylight in July:
12h and 1min - Average daylight in August:
12h and 1min - Average daylight in September:
12h and 1min - Average daylight in October:
12h and 1min - Average daylight in November:
12h and 1min - Average daylight in December:
12h and 1min
The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 6min).
- Average sunshine in January:
8h and 4min - Average sunshine in February:
7h and 4min - Average sunshine in March:
8h and 1min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 1min - Average sunshine in June:
7h and 4min
- Average sunshine in July:
8h and 1min - Average sunshine in August:
9h and 1min - Average sunshine in September:
8h and 1min - Average sunshine in October:
8h and 2min - Average sunshine in November:
8h and 2min - Average sunshine in December:
8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 6min).
The months with the least sunshine are February and June (Average sunshine: 7h and 42min).
Average sunshine days
Biak, Indonesia
- Average sunshine days in January:
1.5 days - Average sunshine days in February:
1.3 days - Average sunshine days in March:
1.5 days - Average sunshine days in April:
1 days - Average sunshine days in May:
2.3 days - Average sunshine days in June:
1.1 days
- Average sunshine days in July:
1.9 days - Average sunshine days in August:
2.2 days - Average sunshine days in September:
2.8 days - Average sunshine days in October:
7 days - Average sunshine days in November:
5.8 days - Average sunshine days in December:
3.8 days
The month with the most sunshine days is October (7 days).
The month with the least sunshine days is April (1 days).
Average UV index
Biak, Indonesia
The months with the highest UV index are January, March, April, May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are February and December (UV index 6).
Average cloud cover
Biak, Indonesia
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 37).
Average visibility
Biak, Indonesia
The months with the highest visibility are February, June, September, October, November and December (10km).
The months with the lowest visibility are January, March, April, May, July and August (9km).
Biak, Indonesia
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