When is the best time to go to Seattle
The chart above shows the best time of year to visit Seattle, United States. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Seattle
Seattle weather by month
Please note our recommendations for when to visit Seattle are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 7°C | 149mm | 2.5hrs | 10.1hrs | 8°C |
Cool and wet weather often prevails in Seattle during the month of January
Based on weather alone, this is probably a time of year to avoid going to Seattle for your holidays. The weather is often not a good and not conducive to spending time outdoors.
January is in the winter in Seattle and is typically the coldest month of the year. Daytime maximum temperatures average around a cold 7°C (45°F), whilst at night 2°C (35°F) is normal.
On average January is the driest month of the year in Seattle with around 149mm 5.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 2.5 hours of sunshine per day.
February
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 9°C | 105mm | 4.1hrs | 11.4hrs | 8°C |
February in Seattle is generally damp with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Seattle for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
February is in the winter in Seattle and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cool 10°C (50°F), whilst at night 3°C (37°F) is normal.
On average February is the 2nd driest month of the year in Seattle with around 105mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.1 hours of sunshine per day.
March
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 11°C | 95mm | 5.9hrs | 12.9hrs | 8°C |
The weather in March in Seattle is characteristically cool and a little damp.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit Seattle.
March is in the spring in Seattle and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 12°C (53°F), whilst at night 4°C (39°F) is normal.
On average March is the 3rd driest month of the year in Seattle with around 95mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.9 hours of sunshine per day.
April
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 13°C | 66mm | 7.2hrs | 14.7hrs | 9°C |
Seattle's weather in April is typically cool and reasonably dry in nature.
Although outside the main holiday season, there is still plenty of quite acceptable weather around this time of year. This makes it an okay time to visit Seattle.
April is in the spring in Seattle and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 14°C (58°F), whilst at night 5°C (41°F) is normal.
On average April is the 4th driest month of the year in Seattle with around 66mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.2 hours of sunshine per day.
May
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 16°C | 46mm | 8.6hrs | 16.3hrs | 10°C |
May is a reasonably dry month in Seattle and the temperature is generally mild.
It is perhaps a good month to visit Seattle, with some particularly good weather at this time of year.
May is in the spring in Seattle and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 18°C (64°F), whilst at night 8°C (46°F) is normal.
On average May is the 5th driest month of the year in Seattle with around 46mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.6 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 19°C | 41mm | 9.4hrs | 10.1hrs | 12°C |
The climate in Seattle during June can be summarized as mild and reasonably dry.
It is perhaps a good month to visit Seattle, with some very good weather at this time of year.
June is in the summer in Seattle and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a comfortable 21°C (70°F), whilst at night 11°C (52°F) is normal.
On average June is the 6th driest month of the year in Seattle with around 41mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.4 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 21°C | 21mm | 10.8hrs | 11.4hrs | 13°C |
July in Seattle is generally dry with the temperature being warm.
It is perhaps the perfect month to visit Seattle, with some inordinately good weather at this time of year.
July is in the summer in Seattle and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (75°F), whilst at night 13°C (55°F) is normal.
On average July is the 6th wettest month of the year in Seattle with around 21mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.8 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 21°C | 31mm | 9.8hrs | 12.9hrs | 13°C |
The weather in August in Seattle is characteristically warm and reasonably dry.
It is perhaps the perfect month to visit Seattle, with some surprisingly good weather at this time of year.
August is in the summer in Seattle and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (75°F), whilst at night 13°C (56°F) is normal.
On average August is the 5th wettest month of the year in Seattle with around 31mm 1.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.8 hours of sunshine per day.
September
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 19°C | 49mm | 7.8hrs | 14.7hrs | 13°C |
Seattle's weather in September is typically mild and reasonably dry in nature.
It is perhaps a good month to visit Seattle, with some very good weather at this time of year.
September is in the fall / autumn in Seattle and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 21°C (69°F), whilst at night 11°C (52°F) is normal.
On average September is the 4th wettest month of the year in Seattle with around 49mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.8 hours of sunshine per day.
Seattle weather in September »
October
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 14°C | 87mm | 5hrs | 16.3hrs | 11°C |
October is a a little damp month in Seattle and the temperature is generally mild.
Although outside the main holiday season, there is still plenty of fairly acceptable weather around this time of year. This makes it an okay time to visit Seattle.
October is in the fall / autumn in Seattle and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 16°C (60°F), whilst at night 8°C (46°F) is normal.
On average October is the 3rd wettest month of the year in Seattle with around 87mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 5 hours of sunshine per day.
November
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 10°C | 150mm | 2.7hrs | 10.1hrs | 10°C |
The climate in Seattle during November can be summarized as cool and wet.
Based on weather alone, this is probably a time of year to avoid going to Seattle for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
November is in the fall / autumn in Seattle and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cool 11°C (51°F), whilst at night 5°C (40°F) is normal.
On average November is the 2nd wettest month of the year in Seattle with around 150mm 5.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 2.7 hours of sunshine per day.
December
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 7°C | 151mm | 2hrs | 11.4hrs | 9°C |
December in Seattle is generally wet with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Seattle for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
December is in the winter in Seattle and is typically the warmest month of the year. Daytime maximum temperatures average around a cool 8°C (46°F), whilst at night 2°C (36°F) is normal.
On average December is the wettest month of the year in Seattle with around 151mm 5.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 2 hours of sunshine per day.
Other monthly averages
Seattle weather stats
| Hottest month: | August | 23.5°C 74.3°F |
|---|---|---|
| Driest month: | July | 21mm 0.8ins |
| Sunniest month: | July | 10.8hrs |
| Coldest month: | January | 7.2°C 45°F |
| Wettest month: | December | 151mm 5.9ins |
| Warmest sea: | August | 13.4°C 56.1°F |
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