Best time to visit Bellingham
The best time to visit Bellingham is July–August, judged on twenty years of weather records and the events worth going for.
Bellingham, Washington, United States
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 6.8 °C / 44 °F | 3.3 °C / 38 °F | 207 mm / 8.1 in | neither best nor good |
| February | 7 °C / 45 °F | 2.9 °C / 37 °F | 147 mm / 5.8 in | neither best nor good |
| March | 9 °C / 48 °F | 4.4 °C / 40 °F | 175 mm / 6.9 in | neither best nor good |
| April | 11.1 °C / 52 °F | 6.1 °C / 43 °F | 121 mm / 4.7 in | neither best nor good |
| May | 14.2 °C / 58 °F | 9.2 °C / 49 °F | 78 mm / 3.1 in | good month |
| June | 16.5 °C / 62 °F | 12 °C / 54 °F | 57 mm / 2.3 in | good month |
| July | 19.5 °C / 67 °F | 14.5 °C / 58 °F | 24 mm / 0.9 in | best month |
| August | 20 °C / 68 °F | 14.9 °C / 59 °F | 37 mm / 1.5 in | best month |
| September | 17.7 °C / 64 °F | 12.8 °C / 55 °F | 86 mm / 3.4 in | good month |
| October | 13.2 °C / 56 °F | 8.9 °C / 48 °F | 164 mm / 6.4 in | neither best nor good |
| November | 9.1 °C / 48 °F | 5.4 °C / 42 °F | 252 mm / 9.9 in | neither best nor good |
| December | 6.3 °C / 43 °F | 3.1 °C / 38 °F | 213 mm / 8.4 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: good
- JJune: good
- JJuly: best
- AAugust: best
- SSeptember: good
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Best
- July–August
- Good
- May–June, September
Why these months
May · good
In its favour: share of daylight that is sunny 76%, precipitation 78 mm / 3.1 in, feels like (high) 13.1 °C / 56 °F, average daily high 14.2 °C / 58 °F, days with heavy rain 2.5 days, average daily low 9.2 °C / 49 °F, wet days 11.5 days.
Against: relative humidity 79%.
June · good
In its favour: feels like (high) 16.2 °C / 61 °F, precipitation 57 mm / 2.3 in, share of daylight that is sunny 79%, average daily high 16.5 °C / 62 °F, days with heavy rain 1.9 days, wet days 9.2 days, average daily low 12 °C / 54 °F.
Against: relative humidity 80%.
July · best
In its favour: feels like (high) 20 °C / 68 °F, average daily high 19.5 °C / 67 °F, precipitation 24 mm / 0.9 in, share of daylight that is sunny 89%, wet days 4.3 days, days with heavy rain 0.7 days, average daily low 14.5 °C / 58 °F.
Against: relative humidity 80%.
August · best
In its favour: feels like (high) 20.5 °C / 69 °F, average daily high 20 °C / 68 °F, precipitation 37 mm / 1.5 in, share of daylight that is sunny 88%, wet days 5.1 days, days with heavy rain 1.3 days, average daily low 14.9 °C / 59 °F.
Against: relative humidity 81%.
September · good
In its favour: feels like (high) 17.5 °C / 64 °F, share of daylight that is sunny 81%, average daily high 17.7 °C / 64 °F, precipitation 86 mm / 3.4 in, wet days 9.3 days, days with heavy rain 3.2 days, average daily low 12.8 °C / 55 °F.
Against: relative humidity 83%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: good
- MMay: best
- JJune: best
- JJuly: best
- AAugust: best
- SSeptember: best
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Best
- May–September
- Good
- April
Why these months
April · good
In its favour: average daily high 11.1 °C / 52 °F, precipitation 121 mm / 4.7 in, average daily low 6.1 °C / 43 °F, share of daylight that is sunny 72%, daylight per day 13.7 h, feels like (high) 8.8 °C / 48 °F, wind (daily max) 15 km/h / 9 mph.
Against: wet days 15.2 days, days with heavy rain 4.5 days.
May · best
In its favour: average daily high 14.2 °C / 58 °F, precipitation 78 mm / 3.1 in, feels like (high) 13.1 °C / 56 °F, average daily low 9.2 °C / 49 °F, share of daylight that is sunny 76%, daylight per day 15.3 h, days with heavy rain 2.5 days, wet days 11.5 days, wind (daily max) 13 km/h / 8 mph.
June · best
In its favour: average daily high 16.5 °C / 62 °F, precipitation 57 mm / 2.3 in, days with heavy rain 1.9 days, wet days 9.2 days, feels like (high) 16.2 °C / 61 °F, average daily low 12 °C / 54 °F, share of daylight that is sunny 79%, daylight per day 16.1 h, wind (daily max) 13 km/h / 8 mph.
July · best
In its favour: average daily high 19.5 °C / 67 °F, precipitation 24 mm / 0.9 in, wet days 4.3 days, days with heavy rain 0.7 days, feels like (high) 20 °C / 68 °F, share of daylight that is sunny 89%, daylight per day 15.7 h, average daily low 14.5 °C / 58 °F, wind (daily max) 12 km/h / 8 mph.
August · best
In its favour: average daily high 20 °C / 68 °F, precipitation 37 mm / 1.5 in, wet days 5.1 days, days with heavy rain 1.3 days, feels like (high) 20.5 °C / 69 °F, share of daylight that is sunny 88%, daylight per day 14.3 h, average daily low 14.9 °C / 59 °F, wind (daily max) 12 km/h / 7 mph.
September · best
In its favour: average daily high 17.7 °C / 64 °F, precipitation 86 mm / 3.4 in, wet days 9.3 days, feels like (high) 17.5 °C / 64 °F, average daily low 12.8 °C / 55 °F, share of daylight that is sunny 81%, daylight per day 12.6 h, days with heavy rain 3.2 days, wind (daily max) 12 km/h / 7 mph.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Mt Baker, 60 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 3.8 °C | 3.9 °C | 6.2 °C | 8.8 °C | 13.1 °C | 16.2 °C | 20 °C | 20.5 °C | 17.5 °C | 11.6 °C | 6.4 °C | 3.2 °C |
| Days with heavy rain | 8.4 days | 5.3 days | 6.8 days | 4.5 days | 2.5 days | 1.9 days | 0.7 days | 1.3 days | 3.2 days | 6.3 days | 10.1 days | 8.4 days |
| Time rain usually falls | 7 am | 4 pm | 5 pm | 3 pm | 12 pm | 1 pm | 9 am | 8 am | 6 am | 4 pm | 3 pm | 2 am |
| Sunshine per day | 4.5 h | 6 h | 7.6 h | 9.9 h | 11.6 h | 12.8 h | 13.9 h | 12.6 h | 10.2 h | 7.1 h | 4.7 h | 4.1 h |
| Relative humidity | 85% | 81% | 79% | 77% | 79% | 80% | 80% | 81% | 83% | 84% | 84% | 85% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 7.2 µg/m³ | 7.1 µg/m³ | 8.3 µg/m³ | 8.7 µg/m³ | 9 µg/m³ | 9.3 µg/m³ | 7.4 µg/m³ | 12 µg/m³ | 12.7 µg/m³ | 11 µg/m³ | 9.4 µg/m³ | 7.7 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 13.5 µg/m³ | 12.9 µg/m³ | 15 µg/m³ | 15.4 µg/m³ | 15.5 µg/m³ | 15.1 µg/m³ | 12.8 µg/m³ | 19.9 µg/m³ | 20.1 µg/m³ | 17.4 µg/m³ | 16.4 µg/m³ | 13.9 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.