Koror, Palau Climate & Monthly Averages
Koror has a tropical rainforest climate. May is the hottest month, averaging 85° by day; July is the coldest at 83°.
Rain, not cold, divides the year in Koror
Koror has one of the steadier climates in our dataset. Average highs move only 1°C across the whole year - from 83°F (28°C) in July to 85°F (29°C) in May - so the practical difference between seasons here is rainfall and daylight, not warmth.
The wet-and-dry rhythm at a glance
May is the warm end of the year, averaging 85°F (29°C) by day and 78°F (26°C) overnight. July sits at the other end of the year: 83°F (28°C) by day, 77°F (25°C) at night. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 89°F (32°C) and the lowest daily minimum 73°F (23°C). July is the wettest month at 20.8 inches (527 mm) over 28 days; March is the driest.
Days and nights are about 3°C apart on average - narrower than almost anywhere else we cover. Sunshine averages 9.3 hours a day over the year, peaking in March at 10.3 hours. Relative humidity averages 85% across the year, more humid than 97% of the 3496 cities in our dataset - enough that summer afternoons feel hotter than the thermometer says, which is what the dew point converter is for.
More climate facts for Koror
- Hottest month: May - highs near 85°F (29°C)
- Coldest month: July - highs near 83°F (28°C)
- Decade extremes (2015-2024): 89°F (32°C) high · 73°F (23°C) low
- Wettest month: July (28 rainy days) · Sunniest: March (10.3 h sun/day)
- Climate type: tropical rainforest
- Annual swing: 1°C between the average warmest and coolest month · day to night: 3°C
- Average humidity: 85%
Choosing the right part of the year in Koror
Choose dates by rain, not just temperature
The best time to visit Koror is generally January to March and June to August, when humidity and rainfall are at their lowest, which is what actually varies here. Daytime temperatures in that window sit near 84°F (29°C), with rain on about 26 days a month. For the same question asked the other way round, see where else is warm in January.
What the humidity changes
Pack for Koror with light clothing for the warm months, proper waterproofs rather than an umbrella - wet days are the norm here and moisture-wicking fabrics for the humidity. Even in May, lows of 78°F (26°C) make an extra layer worth the space.
Warm all year: the monthly rain pattern
Each card shows the average high and low. The bar places that month between Koror's coldest night and warmest afternoon.
January
- Rain
- 25 days
- Sunshine
- 9.4 h
- Daylight
- 11.7 h
February
- Rain
- 21 days
- Sunshine
- 9.7 h
- Daylight
- 11.9 h
March
- Rain
- 22 days
- Sunshine
- 10.3 h
- Daylight
- 12.1 h
April
- Rain
- 24 days
- Sunshine
- 10.2 h
- Daylight
- 12.3 h
May
- Rain
- 27 days
- Sunshine
- 9.9 h
- Daylight
- 12.5 h
June
- Rain
- 29 days
- Sunshine
- 9.0 h
- Daylight
- 12.5 h
July
- Rain
- 28 days
- Sunshine
- 8.2 h
- Daylight
- 12.5 h
August
- Rain
- 28 days
- Sunshine
- 9.3 h
- Daylight
- 12.4 h
September
- Rain
- 27 days
- Sunshine
- 9.1 h
- Daylight
- 12.1 h
October
- Rain
- 28 days
- Sunshine
- 8.8 h
- Daylight
- 11.9 h
November
- Rain
- 28 days
- Sunshine
- 9.4 h
- Daylight
- 11.8 h
December
- Rain
- 28 days
- Sunshine
- 8.9 h
- Daylight
- 11.7 h
Looking for warmer alternatives? Browse warm places by month, or compare Koror's coolest part of the year: July, January, February.
Monthly temperature and rain table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 83° | 78° | 25 | 10.1 in | 9.4 h/day | 11.7 h | 80% | 84% |
| February | 83° | 78° | 21 | 8.1 in | 9.7 h/day | 11.9 h | 74% | 82% |
| March | 84° | 78° | 22 | 6.6 in | 10.3 h/day | 12.1 h | 72% | 82% |
| April | 85° | 78° | 24 | 9.9 in | 10.2 h/day | 12.3 h | 81% | 83% |
| May | 85° | 78° | 27 | 12.2 in | 9.9 h/day | 12.5 h | 87% | 86% |
| June | 84° | 78° | 29 | 16.1 in | 9.0 h/day | 12.5 h | 98% | 87% |
| July | 83° | 77° | 28 | 20.8 in | 8.2 h/day | 12.5 h | 91% | 87% |
| August | 84° | 78° | 28 | 16.2 in | 9.3 h/day | 12.4 h | 91% | 85% |
| September | 84° | 78° | 27 | 14.8 in | 9.1 h/day | 12.1 h | 90% | 85% |
| October | 84° | 78° | 28 | 15.1 in | 8.8 h/day | 11.9 h | 91% | 85% |
| November | 84° | 78° | 28 | 11.7 in | 9.4 h/day | 11.8 h | 93% | 86% |
| December | 84° | 78° | 28 | 13.1 in | 8.9 h/day | 11.7 h | 90% | 85% |
How Koror compares for rain and warmth
- Annual precipitation is 154.7 inches (3930 mm) - wetter than any other city in our 3496-city dataset.
- Its warmest and coolest months are 1°C apart - a steadier year than almost every other city we track.
- Rain or snow reaches the ground on 316 days a year - more wet days than any other city in our 3496-city dataset.
These comparisons use the same ten-year window for every city in the dataset.
How the calendar changes in warm-weather Koror
March through May
March through May runs hot here - highs near 84°F (29°C), nights near 78°F (26°C), and rain falls on around 74 of the 90 days. Daylight is generous - around 10.1 hours of sun a day.
June through August
June through August sits firmly in the heat here - highs near 84°F (29°C), nights near 78°F (25°C), and rain falls on around 86 of the 90 days.
September through November
September through November brings hot afternoons here - highs near 84°F (29°C), nights near 78°F (26°C), and rain falls on around 83 of the 90 days.
December through February
Through December through February, Koror brings hot afternoons: 84°F (29°C) by day, 78°F (25°C) after dark, and rain falls on around 74 of the 90 days.
Questions about heat and rain in Koror
Is Koror warmer or cooler than most cities?
How warm is Koror on average?
Is Koror humid?
Is Koror hot in summer?
Koror temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.