Annual mean 10°C · wettest around November · prevailing wind S
Warmest
19.8 °C
Coldest
5.8 °C
Wettest
33%
Windiest
4.5 m/s
Prevailing
S
3.7 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Port Townsend over the whole year is 10°C. August is the hottest month, with highs of about 19°C; February is the coldest, with lows of about 4°C. The rainy (wet) season in Port Townsend runs from October to March, peaking in November with a 33% chance of rain on a given day. The dry season is April to September; July is the driest month, at 17%. Winds in Port Townsend are highest in January, averaging 3.4 m/s (12 km/h), and lightest in September, at 2.4 m/s (9 km/h). The prevailing wind is from the S. The clearest skies in Port Townsend come in July, when the sky is typically 30% covered; December is the cloudiest month, at 66%.
Month by month Port Townsend climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
7°C
5°C
2°C
30%
63%
3.4 m/s
0
0
19
February
6°C
4°C
2°C
28%
66%
3.3 m/s
0
0
19
March
9°C
5°C
5°C
25%
58%
3.4 m/s
1
0
34
April
11°C
7°C
8°C
24%
51%
3.4 m/s
6
0
59
May
14°C
10°C
11°C
21%
46%
3.1 m/s
24
0
81
June
17°C
12°C
14°C
19%
44%
3.1 m/s
46
3
85
July
19°C
13°C
17°C
17%
30%
3.2 m/s
70
6
84
August
19°C
14°C
18°C
18%
35%
2.7 m/s
77
11
79
September
17°C
12°C
15°C
21%
46%
2.4 m/s
56
2
87
October
13°C
9°C
10°C
28%
56%
2.8 m/s
13
0
72
November
9°C
7°C
5°C
33%
64%
3.4 m/s
1
0
38
December
7°C
5°C
3°C
32%
66%
3.4 m/s
0
0
21
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Port Townsend weather by season
Year round, Port Townsend has days of about 6°C at their warmest in February, its coolest month, and 19°C in August, its warmest; the coolest hours of the day run from 4°C to 14°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around November and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Port Townsend weather in winterDecember to February
High 7°CLow 4°CRain 30%
Winter in Port Townsend has typical daily highs of about 7°C and lows of about 4°C, with a 30% chance of rain on a given day.
Port Townsend weather in springMarch to May
High 12°CLow 7°CRain 23%
Spring in Port Townsend has typical daily highs of about 12°C and lows of about 7°C, with a 23% chance of rain on a given day.
Port Townsend weather in summerJune to August
High 18°CLow 13°CRain 18%
Summer in Port Townsend has typical daily highs of about 18°C and lows of about 13°C, with a 18% chance of rain on a given day.
Port Townsend weather in autumnSeptember to November
High 13°CLow 9°CRain 27%
Autumn in Port Townsend has typical daily highs of about 13°C and lows of about 9°C, with a 27% chance of rain on a given day.
When is the rainy season in Port Townsend?
The rainy (wet) season in Port Townsend runs from October to March, peaking in November with a 33% chance of rain on a given day. The dry season is April to September; July is the driest month, at 17%.
What time of year is Port Townsend windiest?
Winds in Port Townsend are highest in January, averaging 3.4 m/s (12 km/h), and lightest in September, at 2.4 m/s (9 km/h). The prevailing wind is from the S.
What is the average temperature in Port Townsend year round?
The average temperature in Port Townsend over the whole year is 10°C. August is the hottest month, with highs of about 19°C; February is the coldest, with lows of about 4°C.