May weather forecast and climate
Piteå, Sweden SE

• Average high temperature in May: 13°C

The warmest month (with the highest average high temperature) is July (21.1°C).
The month with the lowest average high temperature is January (-4.9°C).

• Average low temperature in May: 2.8°C

The month with the highest average low temperature is July (11.6°C).
The coldest month (with the lowest average low temperature) is February (-13°C).

• Average humidity in May: 56%

The month with the highest relative humidity is November (86%).
The month with the lowest relative humidity is May (56%).

• Average rainfall in May: 30mm

The wettest month (with the highest rainfall) is September (69mm).
The driest month (with the lowest rainfall) is March (23mm).

• Average sea temperature in May: 3.8°C

The best month for swimming (with the highest average sea temperature) is July (15.5°C).
The coldest month (with the lowest average sea temperature) is February (0.3°C).

• Average daylight in May: 19h

The month with the longest days is June (Average daylight: 22h).
The month with shortest days is December (Average daylight: 3.7h).

• Average sunshine in May: 8.7h

The month with most sunshine is June (Average sunshine: 10h).
The month with least sunshine is December (Average sunshine: 0.3h).