Weather in Washington: May
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Average day temperature: | 73.2°F |
| Average night temperature: | 59.5°F | |
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Sea water temperature: | 64.5°F |
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Number of sunny days: | 12 days |
| Day length: | 13.8 - 14.7 hours | |
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Number of rainy days: | 5 days |
| Precipitation totals: | 2.9 in. | |
| more information | ||
14 days
forecast
forecast
| Washington |
sea water
temperature
temperature
| Washington |
Air temperature in May, °F
Show year:
2025
2024
2023
The highest day temperature during May of 2025 was 87°F. At the same time the lowest night temperature was 49°F. Daily and nightly averages during May were 72.6°F and 60.8°F.
Sea water temperature in Washington in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 69.1°F. The highest and lowest sea temperatures during the month were 73.6°F and 65.3°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in May is almost equal.
Precipitation total in May, in.
Precipitation total value in Washington in May is 3.2 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 6.8 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 7.6.
Best time for vacation in Washington
Washington on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Washington
Local time: 23:03
December 05, friday
0000
30°F
S
8 mph
8 mph
0300
30°F
SW
6 mph
6 mph
0600
28°F
W
5 mph
5 mph
0900
27°F
W
6 mph
6 mph
1200
30°F
NW
4 mph
4 mph
1500
34°F
N
2 mph
2 mph
1800
34°F
W
2 mph
2 mph
2100
34°F
W
2 mph
2 mph
