May weather forecastBasel, Switzerland

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

May

Weather in May

In May, Basel begins to truly feel like spring with temperatures typically peaking at 19.6°C (67.3°F). The increased rainfall, peaking at 99mm (3.9"), nourishes the verdant sceneries that abound in Basel during this time of the year. Longer daylight hours contribute to the increase in temperature, adding a vibrant touch to the city's atmosphere. This month also sees a slight rise in humidity, making the climate mildly warmer.

Temperature

Basel's transition into May sees a mild rise in the average high-temperature, edging from a moderate 15.2°C (59.4°F) in April to a still refreshing 19.6°C (67.3°F). Basel, in the month of May, anticipates a consistent average low-temperature of 9.2°C (48.6°F).

Humidity

In Basel, the average relative humidity in May is 72%.

Rainfall

The month with the most rainfall is May, when the rain falls for 12.4 days and typically aggregates up to 99mm (3.9") of precipitation.

Snowfall

In Basel, Switzerland, snow does not fall in May through September.

Daylight

In Basel, the average length of the day in May is 15h and 8min.
On the first day of May, sunrise is at 06:11 and sunset at 20:41. On the last day of the month, sunrise is at 05:36 and sunset at 21:18 CEST.

Sunshine

In Basel, the average sunshine in May is 5.7h.

UV index

The average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In May, the maximum UV index of 6 suggests this advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

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

Frequently asked questions

The high-temperature, in May, in Basel, is 19.6°C (67.3°F), while the low-temperature averages to 9.2°C (48.6°F).

In Basel, the average relative humidity in May is 72%.

May is the month with the most rainfall in Basel, Switzerland. Rain falls for 12.4 days and accumulates 99mm (3.9") of precipitation.

In Basel, Switzerland, in May, during 12.4 rainfall days, 99mm (3.9") of precipitation is typically accumulated.

In Basel, Switzerland, snow does not fall in May through September.

In May, it doesn't snow. April is the latest month when it typically snows.

In Basel, Switzerland, the average day length in May is 15h and 8min.

On the first day of May in Basel, sunrise is at 06:11 and sunset at 20:41. On the last day of the month, sunrise is at 05:36 and sunset at 21:18 CEST.

The average sunshine duration in May in Basel, Switzerland, is 5.7h.

In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Apr

May

Jun

Average high temperature

15.2°C

19.6°C

22.9°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 May
Basel, Switzerland

Average high temperature in May: 19.6°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 May: 9.2°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 May
Basel, Switzerland

Average humidity in May: 72%

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 May
Basel, Switzerland

Average rainfall in May: 99mm

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

Average rainfall days in May
Basel, Switzerland

Average rainfall days in May: 12.4 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 May
Basel, Switzerland

Average snowfall in May: 0mm

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 May
Basel, Switzerland

Average snowfall days in May: 0 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 May /
Average sunshine in May
Basel, Switzerland

Average daylight in May: 15h and 6min

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 May: 5h and 42min

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 May
Basel, Switzerland

Average UV index in May: 6

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).