Climate Overview
The climate in Koror is hot. The average annual temperature is 27°C and approximately 3297mm of precipitation falls per year. Koror receives a notable amount of rainfall throughout the year, including during its driest month. Koror sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Koror has relatively stable temperatures year-round, staying within a 3°C range. The warmest month is May, when average highs reach 29°C and the mean temperature sits around 28°C. February is the coolest month, with minimum temperatures around 26°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows.
Precipitation
Koror is a very wet location, receiving approximately 3297mm of precipitation annually, which averages out to around 275mm per month. The wettest month is July, averaging 372mm of rainfall. May and June also tend to see above-average precipitation. The driest month is March, with just 129mm. That's 243mm less than July, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.
Wind
Koror is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 7km/h in winter, 5km/h in spring, 4km/h in summer, 5km/h in autumn.
Seasons
93 days until Autumn
It is currently summer in Koror, which began on June 21, 2026. Koror sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in May at around 29°C, while the coldest stretch bottoms out in February near 26°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 654mm across the season with a monthly average of 218mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 987mm across the season with a monthly average of 329mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 27 to 28°C. Rainfall is heavy, totalling around 877mm across the season with a monthly average of 292mm. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 778mm across the season with a monthly average of 259mm. Winds are generally light, averaging 7km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Koror based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
