Bellingham weather by month & the best time to visit
United States · seaside town · Mediterranean climate

The best time to visit Bellingham is July — its sunniest month (Sunshine Score 85/100), with August and June close behind. Bellingham averages about 2,005 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 29 mm of rain in July.
When is the best time to visit Bellingham?
For sunshine, the best time to visit Bellingham is July, then August and June. The dullest month is January (0/100, 207 mm of rain). The full month-by-month picture is in the table below.
How sunny is Bellingham?
Bellingham gets a moderate 2,005 hours of sunshine a year. 85 Sunshine Score points separate July (85) from January (0), so the month you pick matters. It ranks #405 of 580 destinations in United States for annual sunshine, below the national median of 2,279 hours. Rain has a clear season: the wettest stretch, around December, carries about 44% of the annual 1,403 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 6° / 43°F | 1° / 34°F | 207 mm | 0 | 8° / 46°F |
| February | 0 | 7° / 45°F | 0° / 32°F | 114 mm | 1 | 8° / 46°F |
| March | 10 | 10° / 50°F | 2° / 36°F | 157 mm | 2 | 9° / 48°F |
| April | 30 | 13° / 55°F | 5° / 41°F | 97 mm | 4 | 10° / 50°F |
| May | 64 | 18° / 64°F | 9° / 48°F | 71 mm | 5 | 12° / 54°F |
| June | 80 | 20° / 68°F | 11° / 52°F | 56 mm | 6 | 15° / 59°F |
| July | 85 | 23° / 73°F | 14° / 57°F | 29 mm | 7 | 18° / 64°F |
| August | 84 | 23° / 73°F | 14° / 57°F | 36 mm | 6 | 18° / 64°F |
| September | 76 | 20° / 68°F | 11° / 52°F | 77 mm | 4 | 16° / 61°F |
| October | 31 | 14° / 57°F | 7° / 45°F | 153 mm | 2 | 12° / 54°F |
| November | 5 | 9° / 48°F | 3° / 37°F | 222 mm | 1 | 10° / 50°F |
| December | 0 | 5° / 41°F | 0° / 32°F | 184 mm | 0 | 9° / 48°F |
Sea temperature in Bellingham by month
The sea off Bellingham is warmest in July at around 18°C / 64°F, and coolest in January at 8°C / 46°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
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Bellingham: questions and answers
What kind of destination is Bellingham?
Bellingham is a seaside town in United States with a Mediterranean climate — the sea reaches 18°C at its warmest.
How many hours of sunshine does Bellingham get a year?
Bellingham gets about 2,005 hours of sunshine a year, at its best around July.
When is the best time to visit Bellingham?
The sunniest time to visit Bellingham is July, when the Sunshine Score peaks at 85/100 (with August and June close behind). Expect daytime highs around 23°C / 73°F.
What is the least sunny month in Bellingham?
January is the least sunny month in Bellingham, scoring 0/100 with about 207 mm of rain.
What is the sea temperature in Bellingham?
The sea in Bellingham ranges from about 8°C (January) to 18°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Bellingham?
The typical midday UV index in Bellingham peaks around 7 (high) in July, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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