Bellingham
Washington, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and Climate
Bellingham, WA

  • The average high temperature in May: 16.8°C

The warmest month (with the highest average high temperature) is August (22.1°C).
The month with the lowest average high temperature is December (6.8°C).

  • The average low temperature in May: 7.5°C

The month with the highest average low temperature is July (11.9°C).
The coldest month (with the lowest average low temperature) is December (0°C).

  • The average rainfall in May: 63mm

The wettest month (with the highest rainfall) is November (147.3mm).
The driest month (with the lowest rainfall) is July (30mm).

  • The average rainfall days in May: 12.9 days

The month with the highest number of rainy days is November (19.9 days).
The month with the lowest number of rainy days is July (5.9 days).

  • The average snowfall in May: 0mm

The month with the highest snowfall is January (86.4mm).
Months with the lowest snowfall are April, May, June, July, August and September (0mm).

  • The average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (1.8 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

  • The average sea temperature in May: 12°C

Best months for swimming (with the highest average sea temperature) are July and August (14°C).
Coldest months (with the lowest average sea temperature) are January, February, March and December (8°C).

  • The average daylight in May: 15h

Months with the longest days are June and July (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8h).

  • The average sunshine in May: 7h

The month with most sunshine is July (Average sunshine: 9h).
Months with least sunshine are January, November and December (Average sunshine: 2).

  • The average UV index in May: 6

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

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