April weather forecastBasel, Switzerland

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

April

Weather in April

Despite the rainy weather, April in Basel sees a noticeable rise in temperatures, with the lowest averaging at 5.1°C (41.2°F) and highest at 15.2°C (59.4°F). Though rainfall increases to 64mm (2.52"), it's a welcome sight as it breathes life into Basel's lush landscapes. The tremendous growth of flora this month is a sight to behold. Moreover, the UV index begins to rise, indicating more sun exposure during these longer spring days.

Temperature

Basel in April denotes a subtle temperature transition, adjusting from an average high of a cool 11.2°C (52.2°F) in March to a mild 15.2°C (59.4°F). In April, Basel encounters an average low-temperature of 5.1°C (41.2°F) during the night.

Humidity

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

Rainfall

In April, the rain falls for 10.2 days. Throughout April, 64mm (2.52") of precipitation is accumulated. Throughout the year, in Basel, there are 120.4 rainfall days, and 843mm (33.19") of precipitation is accumulated.

Snowfall

Months with snowfall in Basel are January through April, October through December. April is the last month it regularly snows in Basel. During 0.2 snowfall days, in April, Basel aggregates 7mm (0.28") of snow. In Basel, Switzerland, during the entire year, snow falls for 11.1 days and aggregates up to 369mm (14.53") of snow.

Daylight

In Basel, the average length of the day in April is 13h and 39min.
On the first day of the month, sunrise is at 07:07 and sunset at 19:59. On the last day of April, in Basel, sunrise is at 06:13 and sunset at 20:40 CEST.

Sunshine

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

UV index

In April, the average daily maximum UV index in Basel is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 5 during April translates into the following directions:
Guard yourself - Avoiding sunburn is suggested. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.

Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Basel, 15.2°C (59.4°F) is the average high-temperature and 5.1°C (41.2°F) is the average low-temperature during April.

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

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

In Basel, Switzerland, during April, the rain falls for 10.2 days and regularly aggregates up to 64mm (2.52") of precipitation.

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

The average day length in April in Basel is 13h and 39min.

In April, on the first day of the month, sunrise is at 07:07 and sunset at 19:59. On the last day of the month, sunrise is at 06:13 and sunset at 20:40 CEST.

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

In Basel, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M April M J J A S O N D

Mar

April

May

Average high temperature

11.2°C

15.2°C

19.6°C

Average low temperature

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average UV index

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).

Average humidity in April
Basel, Switzerland

Average humidity in April: 68%

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

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).

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).

Average snowfall in April
Basel, Switzerland

Average snowfall in April: 7mm

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

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).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in April: 13h and 42min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

Average sunshine in April: 5h and 6min

The month with the most sunshine is July (Average sunshine: 7h and 12min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).

Average UV index in April
Basel, Switzerland

Average UV index in April: 5

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