April weather forecast and climate
Basel, Switzerland

The Rhine River passing through the city of Basel in Switzerland, with a view of the red stone Munster Cathedral building
The Rhine River passing through the city of Basel in Switzerland, with a view of the red stone Munster Cathedral building

Weather in April

April in Basel, Switzerland, is a mild spring month, with temperature in the range of an average low of 5.1°C (41.2°F) and an average high of 15.2°C (59.4°F).

Temperature

In Basel, the average high-temperature marginally rises, from a fresh 11.2°C (52.2°F) in March, to a mild 15.2°C (59.4°F). In Basel, in April, the average low-temperature is 5.1°C (41.2°F).

Humidity

April is the least humid month in Basel, with an average relative humidity of 68%.

Rainfall

In Basel, Switzerland,, it is raining for 10.2 days, with typically 64mm (2.52") of accumulated precipitation. Throughout the year, in Basel, Switzerland, there are 120.4 rainfall days, and 843mm (33.19") of precipitation is accumulated.

Snowfall

Months with snowfall in Basel, Switzerland, are January through April, October through December. April is the last month it regularly snows. During 0.2 snowfall days, Basel aggregates 7mm (0.28") of snow. Throughout the year, in Basel, there are 11.1 snowfall days, and 369mm (14.53") of snow is accumulated.

Daylight

In Basel, Switzerland, the average length of the day in April is 13.7h.

Sunshine

In Basel, the average sunshine is 5.1h.

UV index

The average daily maximum UV index in Basel is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In April, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the least humid month in Basel?

The least humid month is April, with an average relative humidity of 68%.

What is the average humidity in April in Basel?

In Basel, the average relative humidity in April is 68%.

How much does it rain in Basel in April?

In April, in Basel, Switzerland, the rain falls for 10.2 days. Throughout April, 64mm (2.52") of precipitation is accumulated.

What is the last month it snows in Basel?

April is the last month it regularly snows in Basel, Switzerland. During 0.2 snowfall days, in April, Basel aggregates 7mm (0.28") of snow.

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

In Basel, Switzerland, the average length of the day in April is 13.7h.

How long on average sun shines in April in Basel?

In April, the average sunshine in Basel is 5.1h.

What is the UV index intensity in April in Basel?

In April, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in April
Basel, Switzerland

Average temperature in April - Basel, Switzerland
  • Average high temperature in April: 15.2°C

The warmest month (with the highest average high temperature) is July (25.3°C).
The month with the lowest average high temperature is January (4.5°C).

  • Average low temperature in April: 5.1°C

The month with the highest average low temperature is July (14.5°C).
The coldest month (with the lowest average low temperature) is January (-1.1°C).

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Average humidity in April
Basel, Switzerland

Average humidity in April - Basel, Switzerland
  • Average humidity in April: 68%

Months with the highest relative humidity are November and December (82%).
The month with the lowest relative humidity is April (68%).

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Average rainfall in April
Basel, Switzerland

Average rainfall in April - Basel, Switzerland
  • Average rainfall in April: 64mm

The wettest month (with the highest rainfall) is May (99mm).
The driest month (with the least rainfall) is February (45mm).

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Average rainfall days in April
Basel, Switzerland

Average rainfall days in April - Basel, Switzerland
  • Average rainfall days in April: 10.2 days

The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is February (8.4 days).

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Average snowfall in April
Basel, Switzerland

Average snowfall in April - Basel, Switzerland
  • Average snowfall in April: 7mm

The month with the highest snowfall is February (115mm).
Months with the least snowfall are May, June, July, August and September (0mm).

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Average snowfall days in April
Basel, Switzerland

Average snowfall days in April - Basel, Switzerland
  • Average snowfall days in April: 0.2 days

The month with the highest number of snowfall days is January (3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Basel, Switzerland

Average daylight in April / Average sunshine in April - Basel, Switzerland
  • Average daylight in April: 13.7h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in April: 5.1h

The month with the most sunshine is July (Average sunshine: 7.2h).
The month with the least sunshine is December (Average sunshine: 1.7h).

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Average UV index in April
Basel, Switzerland

Average UV index in April - Basel, Switzerland
  • Average UV index in April: 5

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).

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