April weather forecast and climate
Rennes, France

Weather in April

April in Rennes, France, is a moderate spring month, with average temperature ranging between min 5.2°C (41.4°F) and max 15.2°C (59.4°F).

Temperature

In April, the average high-temperature slightly increases, from a cool 12.1°C (53.8°F) in March, to a moderate 15.2°C (59.4°F). The average low-temperature, in Rennes, is 5.2°C (41.4°F).

Humidity

In April, the average relative humidity is 82%.

Rainfall

In Rennes, during April, the rain falls for 13.8 days and regularly aggregates up to 33mm (1.3") of precipitation. In Rennes, during the entire year, the rain falls for 150.1 days and collects up to 330mm (12.99") of precipitation.

Snowfall

Months with snowfall are January through April, November and December. Months with the most snowfall in Rennes, France, are February through April and December, with an average 2mm (0.08") of accumulated snow.

Daylight

In Rennes, the average length of the day is 13.7h.

Sunshine

In Rennes, France, the average sunshine in April is 7.1h.

UV index

In Rennes, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 3 in April transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in April in Rennes?

In Rennes, France, the average relative humidity in April is 82%.

How many days does it rain in April in Rennes?

In Rennes, in April, during 13.8 rainfall days, 33mm (1.3") of precipitation is typically accumulated.

When does it snow the most in Rennes?

Months with the most snowfall in Rennes, France, are February through April and December, with an average 2mm (0.08") of accumulated snow.

What is the last month it snows in Rennes?

April is the last month it regularly snows. During 0.3 snowfall days, in April, Rennes aggregates 2mm (0.08") of snow.

What is the average length of the day in April in Rennes?

The average length of the day in April in Rennes is 13.7h.

How long on average sun shines in April in Rennes?

In Rennes, France, the average sunshine in April is 7.1h.

What is the UV index intensity in April in Rennes?

The average daily maximum UV index in April in Rennes is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in April
Rennes, France

Average temperature in April - Rennes, France
  • Average high temperature in April: 15.2°C

The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (8.4°C).

  • Average low temperature in April: 5.2°C

The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).

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Average pressure in April
Rennes, France

Average pressure in April - Rennes, France
  • Average pressure in April: 1015.7mbar

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).

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Average wind speed in April
Rennes, France

Average wind speed in April - Rennes, France
  • Average wind speed in April: 13.6km/h

The windiest month (with the highest average wind speed) is February (17.6km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).

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Average humidity in April
Rennes, France

Average humidity in April - Rennes, France
  • Average humidity in April: 82%

The month with the highest relative humidity is December (88%).
Months with the lowest relative humidity are July, August and September (78%).

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Average rainfall in April
Rennes, France

Average rainfall in April - Rennes, France
  • Average rainfall in April: 33mm

The wettest month (with the highest rainfall) is June (39mm).
The driest month (with the least rainfall) is September (12mm).

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Average rainfall days in April
Rennes, France

Average rainfall days in April - Rennes, France
  • Average rainfall days in April: 13.8 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is September (8.4 days).

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Average snowfall in April
Rennes, France

Average snowfall in April - Rennes, France
  • Average snowfall in April: 2mm

Months with the highest snowfall are February, March, April and December (2mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in April
Rennes, France

Average snowfall days in April - Rennes, France
  • Average snowfall days in April: 0.3 days

The month with the highest number of snowfall days is February (0.8 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in April /
Average sunshine in April
Rennes, France

Average daylight in April / Average sunshine in April - Rennes, France
  • Average daylight in April: 13.7h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in April: 7.1h

The month with the most sunshine is July (Average sunshine: 9.7h).
The month with the least sunshine is January (Average sunshine: 4.2h).

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Average sunshine days in April
Rennes, France

Average sunshine days in April - Rennes, France
  • Average sunshine days in April: 12.8 days

The month with the most sunshine days is September (18.5 days).
The month with the least sunshine days is May (12.1 days).

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Average UV index in April
Rennes, France

Average UV index in April - Rennes, France
  • Average UV index in April: 3

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
Rennes, France

Average cloud cover in April - Rennes, France
  • Average cloud cover in April: 46

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 41).

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Average visibility in April
Rennes, France

Average visibility in April - Rennes, France
  • Average visibility in April: 9km

Months with the highest visibility are January, February, March, April, June, July, October, November and December (9km).
Months with the lowest visibility are May, August and September (8km).

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