Climate and monthly weather forecastSibolga, Indonesia
Climate and monthly weather forecast
The climate of Sibolga
Situated along the coast of Indonesia, Sibolga benefits from a tropical rainforest climate, identified in the Köppen climate classification as 'Af'. Dominated by high temperatures coupled with consistent, abundant rainfall, the city comprises its particular microclimate that remains fairly stable throughout the year.The region demonstrates a narrow range of temperatures across the year, with the highest average top temperature being 28.9°C (84°F) in May and the lowest around 27.3°C (81.1°F) in November. Overnight, temperatures drop to their lowest at 21.5°C (70.7°F) from July to September and peak at 22.5°C (72.5°F) in May. Such steady temperatures translate to a city that is warm throughout the year, regardless of the season.
Humidity levels persist on the higher side throughout the year, with the highest recorded level being 84% in November and the lowest at 78% in June and July. Rainfall is a significant aspect of Sibolga's climate. It experiences heavy precipitation ranging from 82mm (3.23") in June to a striking 259mm (10.2") in November. Consequently, the number of rainfall days ranges from 17.2 days in June to a maximum of 27.2 days in November and March.
One striking feature of Sibolga's climate is the uniformly high sea temperature, averaging between 29.2°C (84.6°F) to 29.9°C (85.8°F) through the year. The city experiences about 12 hours of daylight throughout the year, with sunshine hours hovering between 7 hours in December to 9 hours in June.
The best time to visit Sibolga
Considering the climate conditions, the best time to visit Sibolga would depend largely on visitor preferences. For those seeking sunnier weather, June presents an ideal time to visit as it provides the maximum sunshine duration, approximately 9 hours per day. June also boasts the lowest levels of rainfall at 82mm (3.23") spread over 17.2 days, which means fewer interruptions from sudden showers. The sea temperature also peaks at around 29.9°C (85.8°F) during June, perfect for beach and water-based activities.The worst time to visit Sibolga
Travelers who prefer to avoid heavy rainfall should be wary about visiting Sibolga in November. This month receives the highest showers, with the city drenched in precipitation amounting to a massive 259mm (10.2") across 27.2 days. Despite the warm temperatures, the constant rainfall can hamper outdoor activities and sightseeing.Spring weather in Sibolga
In Sibolga, the spring months from March to May see slight variations within a narrow range of warm temperatures. The highest average temperatures stay close to 28.5°C (83.3°F) in March, 28.3°C (82.9°F) in April and 28.9°C (84°F) in May. During the night, the temperature drops to 22.3°C (72.1°F) in March and April and 22.5°C (72.5°F) in May. Rainfall is relatively high, recording 175mm (6.89") in March, 177mm (6.97") in April and reducing to 105mm (4.13") in May. The sea temperature remains high around 29.8°C (85.6°F) in March, 29.9°C (85.8°F) in April and decreases slightly to 29.8°C (85.6°F) in May.Summer weather in Sibolga
Summer weather in Sibolga lasts from June to August and continues to offer warm conditions, with the highest average temperatures ranging from 28.8°C (83.8°F) in June, dropping to 28.4°C (83.1°F) in July and again rising to 28.6°C (83.5°F) in August. Night temperatures fluctuate between 21.8°C (71.2°F) in June and 21.5°C (70.7°F) in July and August. Summer also brings a slight drop in rainfall, reaching its lowest at 82mm (3.23") in June, followed by 83mm (3.27") in July and 119mm (4.69") in August.Autumn weather in Sibolga
Autumn generally starts from September and continues till November with rather static temperatures from 28°C (82.4°F) in September, 28°C (82.4°F) in October, and 27.3°C (81.1°F) in November. Autumn nights are quite balmy, with temperatures averaging around 22.2°C (72°F) in September, 22.4°C (72.3°F) in October, and 22.3°C (72.1°F) in November. However, rainfall increases in autumn, with the city receiving an average of 118mm (4.65") in September, 171mm (6.73") in October, and a substantial 259mm (10.2") in November.Winter weather in Sibolga
The climate in Sibolga during winter, traditionally from December to February, remains warm. The average highest temperatures are from 27.5°C (81.5°F) in December, 27.9°C (82.2°F) in January and 28.7°C (83.7°F) in February. Nightly temperatures remain pleasant, fluctuating around 22.3°C (72.1°F) in December and January, and 22.1°C (71.8°F) in February. Rainfall marks an upward trend, averaging at 201mm (7.91") in December, 145mm (5.71") in January, and 157mm (6.18") in February.Weather in January
Sibolga, Indonesia, starts the year with a pleasant climate common to tropical regions. A noticeable feature of the January weather is the rainfall total of 145mm (5.71"), one of the higher values compared to other months. Transitioning from December, the overall climate remains quite similar with little fluctuation. Weather in January »Weather in February
The weather patterns in February show minor changes from earlier months. The pattern of rainfall sees a small increase to 157mm (6.18"). As the year progresses, Sibolga continues to exhibit its renowned tropical climate. The city's weather supports the thriving biodiversity while letting locals and tourists enjoy various outdoor activities. Weather in February »Weather in March
The first month of the spring, March, is still a warm month in Sibolga, Indonesia, with an average temperature ranging between max 28.5°C (83.3°F) and min 22.3°C (72.1°F). Sibolga, Indonesia, marks the onset of March with an average high-temperature of a still warm 28.5°C (83.3°F), a subtle shift from February's 28.7°C (83.7°F). Weather in March »Weather in April
The familiarity of the weather continues in April in Sibolga, deriving its constancy from the equatorial settings. Despite a minor dip of 2mm (0.08") in rainfall from the March value, the overall climate remains almost unvarying. Weather in April »Weather in May
May arrives with a rise in temperature, alluding to the onset of summer. The registration of rainfall drops notably to 105mm (4.13"), indicating drier conditions compared to the previous months. Sibolga's weather in May supports a range of outdoor activities, making it an ideal time for beach excursions. Weather in May »Weather in June
June marks a further transition into the summer season characterized by warmth and extended daylight hours. Another drop in rainfall value to 82mm (3.23") corroborates the trend of drying weather conditions. The city's charm is enhanced by the sunny weather, paving the way for an active outdoor environment. Weather in June »Weather in July
July in Sibolga comes with abundant sunshine and warm temperatures, setting a summerlike atmosphere. The rainfall measures at the lowest level for the year, standing at 83mm (3.27"). Physiographically, the city maintains its tropical charm unfolded in pleasant summer hues. Weather in July »Weather in August
The weather in August keeps line with the preceding months, maintaining the typical summer conditions. The rainfall shows a subtle increment to 119mm (4.69") when compared to July. However, the climate remains largely unchanging from the typical tropical characteristics of Sibolga. Weather in August »Weather in September
Weather patterns of September in Sibolga, Indonesia, reflect those of the preceding summer months. Although there is a slight increase in rainfall to 118mm (4.65"), the city continues to bask in sunshine. The month witnesses minor changes in weather with a hint of varied climatic dynamics. Weather in September »Weather in October
October arrives, marking a slow transition towards the end of the year. This is affirmed by a steep rise in rainfall, reaching a significant 171mm (6.73"). With the increase in precipitation, outdoor activities might head for a slight respite. Weather in October »Weather in November
As November proceeds, so does the return to a higher rainfall season in Sibolga, culminating at the year maximum of 259mm (10.2"). The meteorological conditions hint towards the upcoming end of the year, with cooler days and increased cloud cover. Weather in November »Weather in December
As the last month of the year, December maintains the cool and moist weather of the previous month. The rainfall decreases somewhat to 201mm (7.91"), creating a cooler atmosphere for holiday celebrations. The month brings along the adapter traits seen in the year-end climatic conditions of Sibolga. Weather in December »Updated: Jan 25, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, in Sibolga, Indonesia, there are 285.3 rainfall days, and 1792mm (70.55") of precipitation is accumulated.
The months with the highest UV index in Sibolga, Indonesia, are January through December, with an average maximum UV index of 6.
The months with the lowest UV index in Sibolga, Indonesia, are January through December, with an average maximum UV index of 6.
April, June and July, with an average sea temperature of 29.9°C (85.8°F), are months with the warmest seawater.
May is the warmest month in Sibolga, exhibiting average temperatures of 28.9°C (84°F) at the peak and 22.5°C (72.5°F) at the base.
The months with the lowest humidity are June and July, with an average relative humidity of 78%.
The month with the least rainfall in Sibolga is June, when the rain falls for 17.2 days and typically collects 82mm (3.23") of precipitation.
With an average of 12h and 12min of daylight, June has the longest days of the year.
With an average of 9h of sunshine, June has the most sunshine of the year.
September and November, with an average sea temperature of 29.2°C (84.6°F), are months with the coldest seawater.
Temperature records in Sibolga mark November as the coldest month, with highs averaging 27.3°C (81.1°F) and lows at 22.4°C (72.3°F).
With an average relative humidity of 84%, November is the most humid month in Sibolga.
November is the month with the most rainfall in Sibolga. Rain falls for 27.2 days and accumulates 259mm (10.2") of precipitation.
The month with the least sunshine in Sibolga, Indonesia, is November, with an average of 7h of sunshine.
December has the shortest days of the year, with an average of 12h and 0min of daylight.
Sibolga, Indonesia, does not observe Daylight Saving Time (DST). WIB timezone is used throughout the entire year.
Average temperature
Sibolga, Indonesia
The warmest month (with the highest average high temperature) is May (28.9°C).
The month with the lowest average high temperature is November (27.3°C).
The month with the highest average low temperature is May (22.5°C).
The coldest months (with the lowest average low temperature) are July and September (21.5°C).
Average pressure
Sibolga, Indonesia
- Average pressure in January:
1010.7mbar - Average pressure in February:
1010.6mbar - Average pressure in March:
1010.6mbar - Average pressure in April:
1010.3mbar - Average pressure in May:
1009.9mbar - Average pressure in June:
1010.1mbar
- Average pressure in July:
1010.3mbar - Average pressure in August:
1010.4mbar - Average pressure in September:
1011mbar - Average pressure in October:
1010.8mbar - Average pressure in November:
1010mbar - Average pressure in December:
1010.2mbar
The month with the highest atmospheric pressure is September (1011mbar).
The month with the lowest atmospheric pressure is May (1009.9mbar).
Average wind speed
Sibolga, Indonesia
- Average wind speed in January:
4.8km/h - Average wind speed in February:
5km/h - Average wind speed in March:
4.8km/h - Average wind speed in April:
4.7km/h - Average wind speed in May:
5.2km/h - Average wind speed in June:
5.6km/h
- Average wind speed in July:
5.5km/h - Average wind speed in August:
5.4km/h - Average wind speed in September:
5.3km/h - Average wind speed in October:
5.3km/h - Average wind speed in November:
5km/h - Average wind speed in December:
4.8km/h
The windiest month (with the highest average wind speed) is June (5.6km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity
Sibolga, Indonesia
The month with the highest relative humidity is November (84%).
The months with the lowest relative humidity are June and July (78%).
Average rainfall
Sibolga, Indonesia
- Average rainfall in January:
145mm - Average rainfall in February:
157mm - Average rainfall in March:
175mm - Average rainfall in April:
177mm - Average rainfall in May:
105mm - Average rainfall in June:
82mm
- Average rainfall in July:
83mm - Average rainfall in August:
119mm - Average rainfall in September:
118mm - Average rainfall in October:
171mm - Average rainfall in November:
259mm - Average rainfall in December:
201mm
The wettest month (with the highest rainfall) is November (259mm).
The driest month (with the least rainfall) is June (82mm).
Average rainfall days
Sibolga, Indonesia
- Average rainfall days in January:
25.8 days - Average rainfall days in February:
23.6 days - Average rainfall days in March:
27.2 days - Average rainfall days in April:
25.8 days - Average rainfall days in May:
22.4 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
19.5 days - Average rainfall days in August:
22.5 days - Average rainfall days in September:
22.5 days - Average rainfall days in October:
25.5 days - Average rainfall days in November:
27.2 days - Average rainfall days in December:
26.1 days
The months with the highest number of rainy days are March and November (27.2 days).
The month with the least rainy days is June (17.2 days).
Average sea temperature
Sibolga, Indonesia
The best months for swimming (with the highest average sea temperature) are April, June and July (29.9°C).
The coldest months (with the lowest average sea temperature) are September and November (29.2°C).
Average daylight / Average sunshine
Sibolga, Indonesia
- Average daylight in January:
12h and 0min - Average daylight in February:
12h and 6min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 12min - Average daylight in May:
12h and 12min - Average daylight in June:
12h and 12min
- Average daylight in July:
12h and 12min - Average daylight in August:
12h and 12min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 6min - Average daylight in November:
12h and 0min - Average daylight in December:
12h and 0min
The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 0min).
- Average sunshine in January:
8h and 18min - Average sunshine in February:
8h and 30min - Average sunshine in March:
8h and 18min - Average sunshine in April:
7h and 54min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h
- Average sunshine in July:
8h and 48min - Average sunshine in August:
8h and 12min - Average sunshine in September:
8h and 18min - Average sunshine in October:
8h - Average sunshine in November:
7h - Average sunshine in December:
7h and 30min
The month with the most sunshine is June (Average sunshine: 9h).
The month with the least sunshine is November (Average sunshine: 7h).
Average sunshine days
Sibolga, Indonesia
- Average sunshine days in January:
4.3 days - Average sunshine days in February:
3.4 days - Average sunshine days in March:
2.8 days - Average sunshine days in April:
3.2 days - Average sunshine days in May:
7 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
9.3 days - Average sunshine days in August:
7.3 days - Average sunshine days in September:
5.1 days - Average sunshine days in October:
3.7 days - Average sunshine days in November:
1.8 days - Average sunshine days in December:
4.6 days
The month with the most sunshine days is June (11.4 days).
The month with the least sunshine days is November (1.8 days).
Average UV index
Sibolga, Indonesia
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover
Sibolga, Indonesia
The month with the most cloud cover is November (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 33).
Average visibility
Sibolga, Indonesia
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, October, November and December (9km).
