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Vanimo, Papua New Guinea climate

Am Tropical monsoon

Vanimo has a remarkably steady tropical climate (Tropical monsoon, Köppen Am). The hottest month is October with an average daily high near 91°F, while the coldest is July averaging around 74°F at night. Around 40 inches of precipitation falls each year, peaking in March (6.7 inches) and easing off in July (2.1 inches).

☀️ All year

Hot

Daytime highs near 91°F most of the year.

🌙 Nights

Stays warm

Even the coolest nights stay near 74°F.

🌧️ Rain

Moderate rainfall

About 40 in of rain a year.

Wettest in March

⛅ Sky & trend

Often grey

Overcast skies dominate much of the year.

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)

Vanimo climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	90	89	90	90	90	89	89	89	90	91	91	90
Avg temp (°F)	82	82	82	82	82	82	81	81	82	82	82	82
Avg low (°F)	74	74	75	74	75	74	74	73	74	74	74	75
Precipitation (in)	4.5	—	6.7	4.3	2.8	2.2	2.2	2.8	3.7	2.5	3.8	4.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	90	89	90	90	90	89
Avg temp (°F)	82	82	82	82	82	82
Avg low (°F)	74	74	75	74	75	74
Precipitation (in)	4.5	—	6.7	4.3	2.8	2.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	89	89	90	91	91	90
Avg temp (°F)	81	81	82	82	82	82
Avg low (°F)	74	73	74	74	74	75
Precipitation (in)	2.2	2.8	3.7	2.5	3.8	4.2

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	82	84	85	81	73	73	74	72	73	75	81	83
Relative humidity (%)	84	84	84	84	83	82	82	81	80	80	82	84
Wind speed (mph)	7.0	7.2	7.0	5.9	5.6	5.5	5.8	6.0	6.0	5.8	5.7	6.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	82	84	85	81	73	73
Relative humidity (%)	84	84	84	84	83	82
Wind speed (mph)	7.0	7.2	7.0	5.9	5.6	5.5

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	74	72	73	75	81	83
Relative humidity (%)	82	81	80	80	82	84
Wind speed (mph)	5.8	6.0	6.0	5.8	5.7	6.4

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 23 years of daily observations at Sentani, a weather station, about 88 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 →