This page presents Palau's climate context for the current climatology, 1991-2020, derived from observed, historical data. Information should be used to build a strong understanding of current climate conditions in order to appreciate future climate scenarios and projected change. You can visualize data for the current climatology through spatial variation, the seasonal cycle, or as a time series. Analysis is available for both annual and seasonal data. Data presentation defaults to national-scale aggregation, however sub-national data aggregations can be accessed by clicking within a country, on a sub-national unit. Other historical climatologies can be selected from the Time Period dropdown list. Data for specific coordinates can be downloaded for in the Data Download page.
Palau’s climate is hot and humid (average relative humidity is 82%) with mean daily air temperature at around 28°C. There is little season variability in its temperature. The difference between its hottest and its coldest months is 0.8°C approximately. The wet season extends from May to October, and the driest season is from February to April, with June and August having the largest rainfall. Rainfall can vary between years as a result of El Niño Southern Oscillation (ENSO). El Niño years are drier and La Niña years are on average wetter.
- Annual mean temperature has increased approximately 0.5°C since the 1950s.
- Warming of sea-surface temperature around Palau has grown more rapidly since the 1980s. However, natural variability of sea-surface temperature at a regional level ensures there is difficulty in measuring long-term trends.
- Annual and seasonal rainfall trends measured over the period 1950-2009 are not statistically significant.
- The driest year on record for most of Micronesia happened in 1998, following the major El Niño of 1997.