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Coupeville (WA) Weather and Climate: A Comprehensive Guide

Coupeville experiences great temperature shifts. The city's weather can transition from warm days to cold weather. It receives a moderate amount of precipitation. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

The climate in Coupeville is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 23°C in August to a chilly 7°C in December.

Nighttime temperatures can drop, with average lows reaching 2°C in December. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Generally, Coupeville receives mid-range precipitation levels, with 602 mm annually. The seasons in Coupeville, bring significant changes in precipitation. The wettest month, November, receives moderate rainfall, with an average of 93 mm of precipitation. This rainfall is distributed across 18 rainy days.

In contrast, the driest month, August, experiences much less rainfall, totaling 14 mm over 4 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Coupeville Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Coupeville, summer days are longer and more sunny, with daily sunshine hours peaking at 11.0 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 2.3 hours per average day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Friday Harbor, the United States of America (42 KM, 26 Miles).

Daily hours of sunshine

Data from: Friday Harbor, the United States of America (42 KM, 26 Miles).

Forecast for Coupeville (WA)

Mon   Dec 23
12°C | 8°C
SE 7 m/s
7.8 mm
partly cloudy and small chance of rain

partly cloudy and small chance of rain

Tue   Dec 24
12°C | 6°C
SE 9 m/s
partly cloudy and no rain

partly cloudy and no rain

Wed   Dec 25
10°C | 7°C
SE 12 m/s
9.7 mm
overcast and heavy rain

overcast and heavy rain

The best time of year to visit Coupeville in the United States of America

During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Coupeville have a dry season?
    Yes, the months of July and August are very dry.
  • Which is the warmest month in Coupeville?
    August has an average maximum temperature of 23°C and is the warmest month of the year.
  • Which is the coldest month in Coupeville?
    The coldest month is December with an average maximum temperature of 7°C.
  • Which is the wettest month in Coupeville?
    November tops the wettest month list with 93 mm of rainfall.
  • Which is the driest month in Coupeville?
    August is the driest month with 14 mm of precipitation.
  • Which is the sunniest month in Coupeville?
    July is the sunniest month with an average of 331 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.