Cool
Average highs are around 14°C, so pack for cooler days.
Weather Guide
Bellingham, Washington, United States Average Monthly Weather
Weather score28Poor annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 14°C, sunshine averages 5h per day, and rainfall totals about 1122mm. Sea temperatures average 11°C across the year.
Annual weather
Annual averages
Temp
14°C
Rain
1122mm
Annual total
Sun
5h
Sea
11°C
Weather score
28
Poor avg
Seasonal climate calendar
Trip feel
Showers
Rainfall averages 110mm, so some wet days are possible.
Limited sun
Sunshine averages 4h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 11°C, so the water can feel cool.
Map
Weather map
Compare Bellingham, Washington, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
October14°C average high
October is close to Bellingham's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
October110mm average rain
October sits near Bellingham's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsMay to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
October4 hours average sun
October is below Bellingham's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
October11°C average sea
October is close to Bellingham's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJune to September
Sea temperatures are usually near 13°C in this stretch, so swimming comfort is at its strongest.
Weather score
October20 weather score
October scores below Bellingham's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
