Kolonia, Micronesia climate

Af Tropical rainforest

Kolonia has a remarkably steady tropical climate (Tropical rainforest, Köppen Af). The hottest month is August with an average daily high near 32°C, while the coldest is January averaging around 24°C at night. Precipitation is fairly even year-round, totalling about 4669 mm.

☀️ All year

Hot

Daytime highs near 32°C most of the year.

About 101 days a year above 32 °C

🌙 Nights

Stays warm

Even the coolest nights stay near 24°C.

🌧️ Rain

Very wet

About 4669 mm of rain a year.

Wettest in May

⛅ Sky & trend

Often grey

Overcast skies dominate much of the year.

+0.1 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Kolonia climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	31	31	31	31	31	31	32	32	32	31	31
Avg temp (°C)	27	27	27	27	27	27	27	27	27	27	27	27
Avg low (°C)	24	24	24	24	24	24	23	23	23	23	23	24
Precipitation (mm)	338	265	411	451	491	405	385	374	375	371	393	410

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	30	31	31	31	31	31
Avg temp (°C)	27	27	27	27	27	27
Avg low (°C)	24	24	24	24	24	24
Precipitation (mm)	338	265	411	451	491	405

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	31	32	32	32	31	31
Avg temp (°C)	27	27	27	27	27	27
Avg low (°C)	23	23	23	23	23	24
Precipitation (mm)	385	374	375	371	393	410

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	23	20	23	25	27	26	27	25	24	25	25	25
Days with high ≥ 32°C (days)	2	2	4	5	6	6	11	17	17	17	11	4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	23	20	23	25	27	26
Days with high ≥ 32°C (days)	2	2	4	5	6	6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	27	25	24	25	25	25
Days with high ≥ 32°C (days)	11	17	17	17	11	4

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	75	73	72	74	73	72	72	70	71	72	72	74
Relative humidity (%)	79	79	80	81	83	83	82	81	81	81	81	80
Wind speed (m/s)	6.4	6.5	6.2	5.7	5.0	4.6	3.8	3.4	3.5	3.6	4.4	6.0

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	75	73	72	74	73	72
Relative humidity (%)	79	79	80	81	83	83
Wind speed (m/s)	6.4	6.5	6.2	5.7	5.0	4.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	72	70	71	72	72	74
Relative humidity (%)	82	81	81	81	81	80
Wind speed (m/s)	3.8	3.4	3.5	3.6	4.4	6.0

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Pohnpei Wso, a weather station, about 1 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →