Climate and monthly weather forecastKoror, Palau
Climate and monthly weather forecast
The climate of Koror
Nestled in the Pacific Ocean, Koror, Palau experiences a tropical rainforest climate, classified as Af under the Köppen climate classification. Throughout the year, the area is characterized by a consistent high temperature, substantial rainfall, and high humidity. On average, temperatures fall between 28°C (82.4°F) to 29.3°C (84.7°F) with minimal fluctuations throughout the year. This steady temperature pattern accentuates the tropical nature of Koror's climate.The humidity remains relatively consistent as well, from 75% to 78%, contributing to a feeling of constant warmth and tropical wetness. Moreover, the average sea temperature is consistently 29°C (84.2°F) year-round, which makes it an excellent location for water activities at any time of year. The daylight hours range from 11.7 hours to a modestly longer 12.5 hours, ensuring plenty of sun regardless of the season.
Koror's climate is characterized by high rainfall, with an average monthly precipitation ranging from 119mm (4.69") to 209mm (8.23"). This rainfall occurs on an average of 23.4 to 27.8 days per month, indicating that rain is common and frequent in Koror. Despite this, the city also enjoys an average of 6.1 to 9.7 sunshine hours per day, suggesting that sunny periods frequently interrupt Koror's rainy weather.
The best time to visit Koror
The optimal time to visit Koror depends heavily on the preferences of the visitor. For those who prefer lower rainfall and slightly cooler temperatures, the month of March is most advantageous. March sees the lowest average rainfall of 119mm (4.69"), along with an average temperature of 28.3°C (82.9°F), offering a good mix of weather conditions for outdoor activities. March also offers slightly fewer rainy days, with approximately 23.9 days of precipitation, and longer sunlight periods with daylight hours reaching up to 12.1 hours.The worst time to visit Koror
For visitors who wish to avoid high rainfall and humidity, June might not be an ideal time to visit Koror. This month witnesses the highest average rainfall, peaking at 209mm (8.23"), across an average of 23.7 days. Although the temperature remains high during this month, the excess rain coupled with high relative humidity of 75% might cause discomfort to some visitors.Spring weather in Koror
Koror’s spring months - March, April, and May, bring modest weather variations. During this period, the temperature slightly increases from 28.3°C (82.9°F) in March to 29.3°C (84.7°F) in May. Rainfall also sees an increase from an average of 119mm (4.69") in March to 173mm (6.81") in May, offering a mixed bag of sunny and rainy days. Humidity remains relatively high, rounding out to an average of 77%. Despite the increased rainfall, Koror enjoys prolonged hours of daylight, reaching up to 12.5 hours in May, providing ample time to explore the tropical paradise.Summer weather in Koror
The summer months in Koror - June, July, and August, represent the most rainy period of the year with an accumulated average rainfall of over 177mm (6.97") to 209mm (8.23"). Although this rainfall is substantial, Koror also experiences an average of around 9 hours of daily sunshine during summer. The warmth is consistent with temperatures ranging from 28.9°C (84°F) to 29.1°C (84.4°F). Despite this rainfall abundance, the sea temperature remains constant, making water activities plausible even during the downpours.Autumn weather in Koror
The autumn months - September, October, and November mirror the summer weather. Temperature during these months hover around 29°C (84.2°F) along with regular rainfall, averaging from 172mm (6.77") to 203mm (7.99"). There's also a slight decrease in daylight hours from 12.2 hours in September to 11.8 hours in November. Despite the high rainfall, sunshine hours remain ample with about 8 hours daily.Winter weather in Koror
Koror’s winter months - December, January, and February, maintain the city's typical warm and wet climate. Air temperatures in winter sit between 28°C (82.4°F) and 28.7°C (83.7°F) while the ever-warm sea stays at a steady 29°C (84.2°F). The monthly average rainfall during these months ranges from 131mm (5.16") to 199mm (7.83") and occurs over about 24 to 28 days per month. With 11.7 to 11.9 hours of daylight and 6.1 to 7.4 hours of daily sunshine, winter days in Koror are still comfortably long and bright.Weather in January
If visiting Koror, Palau in January, anticipate moderate temperatures balanced between highs of 28.7°C (83.7°F) and lows reaching 28°C (82.4°F). The onset of the year in Palau marks the onset of constant mild, tropical weather. Weather in January »Weather in February
The climate in February encounters a slight decrease, with high temperatures lowering to 28.3°C (82.9°F) from the previous month's 28.7°C (83.7°F). In Koror, one notices the prevalence of exceptionally mild and constant temperatures throughout the year, and February is no exception. Weather in February »Weather in March
In Palau, March brings a continuation of warmth echoing February's pattern, as high temperatures sustain at 28.3°C (82.9°F), underlining the region's long-lasting tropical conditions. Famous for its calm and inviting weather, the fluctuation in wind speed creates an impressive dichotomy by witnessing a notable fall from February's 24.5km/h (15.2mph) to 22km/h (13.7mph). Weather in March »Weather in April
April symbolizes the transition into the warmer time of the year, as captured by the amped-up high temperatures reaching 28.8°C (83.8°F), a subtle rise from March's 28.3°C (82.9°F). Koror's weather effortlessly shifts from a cool breeze to a warm tropical pulse. Weather in April »Weather in May
May in Koror captures the essence with a notable climb in high temperatures to 29.3°C (84.7°F), compared to April’s high of 28.8°C (83.8°F). It marks the underway dry season as consistent sunshine graces the skies for most hours of the day. Weather in May »Weather in June
June witnesses almost no change in high temperatures compared to May, resting at a cosy 29.1°C (84.4°F). The month commences the transition into the second half of the year, known for its abundant rainfall. Despite the minimal temperature change, Koror presents a significant drop in average wind speed from May's 14.7km/h (9.1mph) to a gentler 13.5km/h (8.4mph). Weather in June »Weather in July
Slight cooling trends emerge in July, as the high temperature withdraws slightly to 28.9°C (84°F) from June’s 29.1°C (84.4°F). The exquisite harmony between the falling temperatures and the oncoming rainy season exemplifies Koror, Palau's alluring tropical atmosphere. Weather in July »Weather in August
August in Koror mirrors the weather of July, as the high temperatures continue to reach 28.7°C (83.7°F). The region continues to display its unique capacity to seamlessly merge seasons, effectively merging the heat with high humidity and abundant rainfall. Weather in August »Weather in September
September sees a slight escalation in heat with high temperatures rising back to 28.8°C (83.8°F), mildly higher than August's 28.7°C (83.7°F). The month marks the close of summer, with Koror remaining resilient despite the fluctuating weather patterns typical of this time frame. Weather in September »Weather in October
High temperatures in October persist at a steady 29°C (84.2°F), revealing the sustained tropical conditions throughout the year in Koror, Palau. Despite the increased rainfall, the city demonstrates remarkable resilience, with weather patterns retaining their tropical staple. Weather in October »Weather in November
Hosting one of the highest temperature readings of the year, high temperatures in November in Koror escalate to 29.1°C (84.4°F), a climb from October's 29°C (84.2°F). As the end of the year approaches, sporadic rain showers gracefully balance the prevailing high temperatures. Weather in November »Weather in December
In December, high temperatures drop slightly to 28.9°C (84°F) compared to November's 29.1°C (84.4°F), marking the onset of slightly cooler atmospheric conditions in Koror. This month manifests as a confluence of various weather conditions, closing the year with a blend of elevated humidity, mild temperature fluctuations, and steady sea temperatures. Weather in December »Updated: Feb 5, 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
January through April, with an average relative humidity of 78%, are most humid months.
In Koror, Palau, during the entire year, the rain falls for 303.8 days and collects up to 2074mm (81.65") of precipitation.
January through March, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Koror.
January, September and November, with an average maximum UV index of 6, are months with the lowest UV index in Koror, Palau.
Koror sees its lowest temperatures during February and March, with an average high-temperature of 28.3°C (82.9°F).
The months with the highest UV index are February through August, October and December, with an average maximum UV index of 7.
March is the month with the least rainfall. Rain falls for 23.9 days and accumulates 119mm (4.69") of precipitation.
April through December, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Koror.
In Koror, temperatures reach their average annual highs in May, measuring 29.3°C (84.7°F) and a minimum average of 28.1°C (82.6°F).
With an average of 9.7h of sunshine, May has the most sunshine of the year.
The least humid month in Koror is June, with an average relative humidity of 75%.
The month with the most rainfall is June, when the rain falls for 23.7 days and typically aggregates up to 209mm (8.23") of precipitation.
The month with the longest days in Koror, Palau, is June, with an average of 12h and 30min of daylight.
The month with the shortest days is December, with an average of 11h and 42min of daylight.
Koror, Palau, does not utilize Daylight Saving Time (DST). +09 timezone is used throughout the entire year.
The month with the least sunshine in Koror is December, with an average of 6.1h of sunshine.
Average temperature
Koror, Palau
The warmest month (with the highest average high temperature) is May (29.3°C).
The months with the lowest average high temperature are February and March (28.3°C).
The month with the highest average low temperature is November (28.4°C).
The coldest month (with the lowest average low temperature) is February (27.5°C).
Average pressure
Koror, Palau
- Average pressure in January:
1008.8mbar - Average pressure in February:
1009.6mbar - Average pressure in March:
1009.6mbar - Average pressure in April:
1009.3mbar - Average pressure in May:
1009.1mbar - Average pressure in June:
1009mbar
- Average pressure in July:
1008.7mbar - Average pressure in August:
1009.1mbar - Average pressure in September:
1009mbar - Average pressure in October:
1008.7mbar - Average pressure in November:
1008.1mbar - Average pressure in December:
1007.9mbar
The months with the highest atmospheric pressure are February and March (1009.6mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed
Koror, Palau
- Average wind speed in January:
22.7km/h - Average wind speed in February:
24.5km/h - Average wind speed in March:
22km/h - Average wind speed in April:
19.4km/h - Average wind speed in May:
14.7km/h - Average wind speed in June:
13.5km/h
- Average wind speed in July:
17.2km/h - Average wind speed in August:
16.8km/h - Average wind speed in September:
19.6km/h - Average wind speed in October:
17.1km/h - Average wind speed in November:
18.2km/h - Average wind speed in December:
21.3km/h
The windiest month (with the highest average wind speed) is February (24.5km/h).
The calmest month (with the lowest average wind speed) is June (13.5km/h).
Average humidity
Koror, Palau
The months with the highest relative humidity are January, February, March and April (78%).
The month with the lowest relative humidity is June (75%).
Average rainfall
Koror, Palau
- Average rainfall in January:
167mm - Average rainfall in February:
131mm - Average rainfall in March:
119mm - Average rainfall in April:
171mm - Average rainfall in May:
173mm - Average rainfall in June:
209mm
- Average rainfall in July:
177mm - Average rainfall in August:
171mm - Average rainfall in September:
182mm - Average rainfall in October:
172mm - Average rainfall in November:
203mm - Average rainfall in December:
199mm
The wettest month (with the highest rainfall) is June (209mm).
The driest month (with the least rainfall) is March (119mm).
Average rainfall days
Koror, Palau
- Average rainfall days in January:
27.8 days - Average rainfall days in February:
23.8 days - Average rainfall days in March:
23.9 days - Average rainfall days in April:
25.7 days - Average rainfall days in May:
25.6 days - Average rainfall days in June:
23.7 days
- Average rainfall days in July:
24.8 days - Average rainfall days in August:
24.2 days - Average rainfall days in September:
23.4 days - Average rainfall days in October:
26.2 days - Average rainfall days in November:
26.9 days - Average rainfall days in December:
27.8 days
The months with the highest number of rainy days are January and December (27.8 days).
The month with the least rainy days is September (23.4 days).
Average sea temperature
Koror, Palau
The best months for swimming (with the highest average sea temperature) are April, May, June, July, August, September, October, November and December (29°C).
The coldest months (with the lowest average sea temperature) are January, February and March (28°C).
Average daylight / Average sunshine
Koror, Palau
- Average daylight in January:
11h and 48min - Average daylight in February:
11h and 54min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 18min - Average daylight in May:
12h and 30min - Average daylight in June:
12h and 30min
- Average daylight in July:
12h and 30min - Average daylight in August:
12h and 24min - Average daylight in September:
12h and 12min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 48min - Average daylight in December:
11h and 42min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in January:
7h and 24min - Average sunshine in February:
7h and 54min - Average sunshine in March:
8h and 6min - Average sunshine in April:
9h and 36min - Average sunshine in May:
9h and 42min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
8h and 54min - Average sunshine in August:
8h and 42min - Average sunshine in September:
8h and 30min - Average sunshine in October:
7h and 48min - Average sunshine in November:
7h and 48min - Average sunshine in December:
6h and 6min
The month with the most sunshine is May (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days
Koror, Palau
- Average sunshine days in January:
1.8 days - Average sunshine days in February:
1.6 days - Average sunshine days in March:
2.7 days - Average sunshine days in April:
2.1 days - Average sunshine days in May:
3.9 days - Average sunshine days in June:
5.7 days
- Average sunshine days in July:
5.3 days - Average sunshine days in August:
5.9 days - Average sunshine days in September:
5.7 days - Average sunshine days in October:
3.9 days - Average sunshine days in November:
2.1 days - Average sunshine days in December:
1.6 days
The month with the most sunshine days is August (5.9 days).
The months with the least sunshine days are February and December (1.6 days).
Average UV index
Koror, Palau
The months with the highest UV index are February, March, April, May, June, July, August, October and December (UV index 7).
The months with the lowest UV index are January, September and November (UV index 6).
Average cloud cover
Koror, Palau
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is March (Cloud cover 43).
Average visibility
Koror, Palau
The months with the highest visibility are January, February, March, April, May, June, July, August, October and December (10km).
The months with the lowest visibility are September and November (9km).
