Groningen, Suriname climate

Af Tropical rainforest

Groningen has a remarkably steady tropical climate (Tropical rainforest, Köppen Af). The hottest month is October with an average daily high near 93°F, while the coldest is January averaging around 72°F at night. Around 84 inches of precipitation falls each year, peaking in May (12.5 inches) and easing off in October (3.2 inches).

☀️ All year

Hot

Daytime highs near 93°F most of the year.

🌙 Nights

Stays warm

Even the coolest nights stay near 72°F.

🌧️ Rain

Very wet

About 84 in of rain a year.

Wettest in May

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

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)

Groningen climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	87	88	89	89	89	89	90	91	93	93	92	89
Avg temp (°F)	80	80	80	81	81	81	81	82	83	83	83	81
Avg low (°F)	72	72	72	73	74	74	73	73	74	74	74	73
Precipitation (in)	7.6	6.6	5.8	7.9	12.5	11.2	8.6	5.7	3.8	3.2	4.5	7.0

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	87	88	89	89	89	89
Avg temp (°F)	80	80	80	81	81	81
Avg low (°F)	72	72	72	73	74	74
Precipitation (in)	7.6	6.6	5.8	7.9	12.5	11.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	90	91	93	93	92	89
Avg temp (°F)	81	82	83	83	83	81
Avg low (°F)	73	73	74	74	74	73
Precipitation (in)	8.6	5.7	3.8	3.2	4.5	7.0

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	64	69	66	71	75	69	60	50	41	48	58	64
Relative humidity (%)	84	82	81	84	90	92	91	87	77	72	76	83
Wind speed (mph)	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	64	69	66	71	75	69
Relative humidity (%)	84	82	81	84	90	92
Wind speed (mph)	0.2	0.2	0.2	0.2	0.2	0.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	60	50	41	48	58	64
Relative humidity (%)	91	87	77	72	76	83
Wind speed (mph)	0.2	0.2	0.2	0.2	0.2	0.2

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Johan A Pengel Intl, a weather station, about 49 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 →