Cergy-Pontoise, Île-de-France Weather by Month and Climate Averages

How much rain does Cergy-Pontoise get?

Cergy-Pontoise gets 560 mm of precipitation in an average year, spread over about 148 days with measurable rain. That is fewer rainy days than 67% of France.

May is the wettest month, with 61 mm. March is the driest, with 37 mm. December has the most rainy days, about 15.

The longest dry spell in the last five years lasted 24 days, to June 9, 2023.

Cergy-Pontoise weather by month

Cergy-Pontoise weather in January

In January, Cergy-Pontoise averages a high of 8°C and a low of 2°C. It gets 41 mm of precipitation over about 13 rainy days. The sun is out about 22% of daylight hours. The January record high is 16°C (1999) and the record low is -14°C (1985).

Cergy-Pontoise weather in February

In February, Cergy-Pontoise averages a high of 9°C and a low of 2°C. It gets 40 mm of precipitation over about 13 rainy days. The sun is out about 27% of daylight hours. The February record high is 21°C (1990) and the record low is -12°C (1991).

Cergy-Pontoise weather in March

In March, Cergy-Pontoise averages a high of 13°C and a low of 4°C. It gets 37 mm of precipitation over about 12 rainy days. The sun is out about 35% of daylight hours. The March record high is 26°C (2021) and the record low is -8°C (2005).

Cergy-Pontoise weather in April

In April, Cergy-Pontoise averages a high of 16°C and a low of 7°C. It gets 41 mm of precipitation over about 12 rainy days. The sun is out about 41% of daylight hours. The April record high is 28°C (2018) and the record low is -2°C (2013).

Cergy-Pontoise weather in May

In May, Cergy-Pontoise averages a high of 20°C and a low of 10°C. It gets 61 mm of precipitation over about 12 rainy days. The sun is out about 39% of daylight hours. The May record high is 32°C (2005) and the record low is 1°C (2019).

Cergy-Pontoise weather in June

In June, Cergy-Pontoise averages a high of 23°C and a low of 13°C. It gets 48 mm of precipitation over about 11 rainy days. The sun is out about 41% of daylight hours. The June record high is 36°C (2022) and the record low is 6°C (2006). June is one of the most comfortable months to visit.

Cergy-Pontoise weather in July

In July, Cergy-Pontoise averages a high of 26°C and a low of 16°C. It gets 50 mm of precipitation over about 10 rainy days. The sun is out about 41% of daylight hours. The July record high is 42°C (2019) and the record low is 8°C (2015). July is one of the most comfortable months to visit.

Cergy-Pontoise weather in August

In August, Cergy-Pontoise averages a high of 26°C and a low of 15°C. It gets 46 mm of precipitation over about 10 rainy days. The sun is out about 40% of daylight hours. The August record high is 37°C (2020) and the record low is 8°C (2014). August is one of the most comfortable months to visit.

Cergy-Pontoise weather in September

In September, Cergy-Pontoise averages a high of 22°C and a low of 12°C. It gets 40 mm of precipitation over about 11 rainy days. The sun is out about 40% of daylight hours. The September record high is 36°C (2023) and the record low is 3°C (2018). September is one of the most comfortable months to visit.

Cergy-Pontoise weather in October

In October, Cergy-Pontoise averages a high of 17°C and a low of 9°C. It gets 51 mm of precipitation over about 14 rainy days. The sun is out about 29% of daylight hours. The October record high is 28°C (2011) and the record low is -2°C (2010).

Cergy-Pontoise weather in November

In November, Cergy-Pontoise averages a high of 11°C and a low of 5°C. It gets 49 mm of precipitation over about 15 rainy days. The sun is out about 26% of daylight hours. The November record high is 21°C (2015) and the record low is -6°C (1998).

Cergy-Pontoise weather in December

In December, Cergy-Pontoise averages a high of 8°C and a low of 3°C. It gets 56 mm of precipitation over about 15 rainy days. The sun is out about 18% of daylight hours. The December record high is 17°C (1989) and the record low is -8°C (1996).

Sunshine, humidity and wind in Cergy-Pontoise

April is the sunniest month in Cergy-Pontoise, with sunshine about 41% of daylight hours. December is the cloudiest, at 18%. Over the year the sun shines about 33% of daylight hours. Cergy-Pontoise is cloudier than 84% of France.

Humidity peaks in December at 89% and is lowest in July at 65%.

Cergy-Pontoise has about 5 days a year above 32°C. Cergy-Pontoise is cooler than 62% of France.

First and last freeze in Cergy-Pontoise

The first fall freeze in Cergy-Pontoise typically comes around November 19, and the last spring freeze around March 11. That leaves a frost-free growing season of about 253 days.

Cergy-Pontoise weather records

The hottest temperature on record at the Cergy-Pontoise station is 42°C, on July 25, 2019. The coldest is -14°C, on January 17, 1985.

The wettest day on record brought 96 mm of rain, on August 24, 1987.

45 all-time records have been set at the station since 1970.

The annual mean temperature has changed by +0.4°C per decade since 1970.

The best time to visit Cergy-Pontoise

The most comfortable time to visit is typically June to September, when daytime highs sit near 24°C.

Winter (December–February) is chilly, with average highs around 8°C and lows near 3°C.

Spring (March–May) is mild, with average highs around 16°C and lows near 7°C.

Summer (June–August) is warm, with average highs around 25°C and lows near 14°C.

Autumn (September–November) is mild, with average highs around 16°C and lows near 9°C.

Cergy-Pontoise climate questions

How much rain does Cergy-Pontoise get?

Cergy-Pontoise gets 560 mm of precipitation in an average year, over about 148 rainy days.

What is the wettest month in Cergy-Pontoise?

May is the wettest month in Cergy-Pontoise, with 61 mm. March is the driest, with 37 mm.

How many rainy days does Cergy-Pontoise have a year?

Cergy-Pontoise has about 148 days with measurable rain in an average year. December has the most, about 15.

What is the hottest month in Cergy-Pontoise?

July is the warmest month in Cergy-Pontoise, with an average high of 26°C.

What is the coldest month in Cergy-Pontoise?

January is the coldest month in Cergy-Pontoise, with an average low of 2°C.

What is the record high temperature in Cergy-Pontoise?

The record high at the Cergy-Pontoise station is 42°C, set on July 25, 2019. The record low is -14°C, on January 17, 1985.

What is the sunniest month in Cergy-Pontoise?

April is the sunniest month in Cergy-Pontoise, with sunshine about 41% of daylight hours. December is the cloudiest.

When is the first frost in Cergy-Pontoise?

The first fall freeze in Cergy-Pontoise typically comes around November 19. The last spring freeze is around March 11.

What is the best time to visit Cergy-Pontoise?

The most comfortable time to visit is typically June to September, when daytime highs sit near 24°C.