Dieppe, Normandy climate

Cfb Oceanic / temperate

Dieppe has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 71°F, while the coldest is January averaging around 37°F at night. Precipitation is fairly even year-round, totalling about 25 inches.

☀️ Summers

Mild

Highs near 71°F in August.

❄️ Winters

Chilly

Lows near 37°F in January.

🌧️ Rain

Moderate rainfall

About 25 in of rain a year.

Wettest in October

⛅ Sky & trend

Often cloudy

Cloudy skies 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)

Dieppe climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	46	47	51	56	61	66	69	71	67	61	53	48
Avg temp (°F)	42	42	46	49	55	60	63	64	60	55	48	43
Avg low (°F)	37	37	40	43	49	54	57	58	54	49	43	39
Precipitation (in)	1.9	1.8	1.5	1.6	1.8	1.8	2.0	2.3	2.2	2.9	2.7	2.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	46	47	51	56	61	66
Avg temp (°F)	42	42	46	49	55	60
Avg low (°F)	37	37	40	43	49	54
Precipitation (in)	1.9	1.8	1.5	1.6	1.8	1.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	69	71	67	61	53	48
Avg temp (°F)	63	64	60	55	48	43
Avg low (°F)	57	58	54	49	43	39
Precipitation (in)	2.0	2.3	2.2	2.9	2.7	2.7

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	73	72	70	66	69	67	64	65	63	69	73	74
Relative humidity (%)	90	88	86	83	83	83	83	83	83	86	89	90
Wind speed (mph)	11.7	10.9	9.9	8.5	8.2	7.8	7.8	7.7	8.6	10.1	10.7	11.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	73	72	70	66	69	67
Relative humidity (%)	90	88	86	83	83	83
Wind speed (mph)	11.7	10.9	9.9	8.5	8.2	7.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	64	65	63	69	73	74
Relative humidity (%)	83	83	83	86	89	90
Wind speed (mph)	7.8	7.7	8.6	10.1	10.7	11.4

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Dieppe, a weather station, about 2 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 →