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Rabaul, Papua New Guinea climate

Af Tropical rainforest

Rabaul has a remarkably steady tropical climate (Tropical rainforest, Köppen Af). The hottest month is November with an average daily high near 84°F, while the coldest is August averaging around 79°F at night. Precipitation is fairly even year-round, totalling about 92 inches.

☀️ All year

Warm

Daytime highs near 84°F most of the year.

🌙 Nights

Stays warm

Even the coolest nights stay near 79°F.

🌧️ Rain

Very wet

About 92 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)

Rabaul climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	83	83	83	83	83	83	83	83	83	84	84	83
Avg temp (°F)	81	81	81	81	82	82	81	81	81	82	82	82
Avg low (°F)	80	80	80	80	80	80	79	79	79	80	80	80
Precipitation (in)	9.2	8.9	9.2	8.0	7.0	7.2	8.0	7.2	6.9	6.2	6.7	7.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	83	83	83	83	83	83
Avg temp (°F)	81	81	81	81	82	82
Avg low (°F)	80	80	80	80	80	80
Precipitation (in)	9.2	8.9	9.2	8.0	7.0	7.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	83	83	83	84	84	83
Avg temp (°F)	81	81	81	82	82	82
Avg low (°F)	79	79	79	80	80	80
Precipitation (in)	8.0	7.2	6.9	6.2	6.7	7.8

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	83	84	83	79	76	76	81	77	76	74	76	81
Relative humidity (%)	82	82	82	81	80	80	81	80	79	78	78	80
Wind speed (mph)	8.0	8.4	8.2	6.6	6.9	8.2	9.7	10.1	9.2	7.9	6.6	6.6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	83	84	83	79	76	76
Relative humidity (%)	82	82	82	81	80	80
Wind speed (mph)	8.0	8.4	8.2	6.6	6.9	8.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	81	77	76	74	76	81
Relative humidity (%)	81	80	79	78	78	80
Wind speed (mph)	9.7	10.1	9.2	7.9	6.6	6.6

Methodology & sources

Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.

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 →