Oak Harbor, WA vs Seattle, WA

Side-by-side comparison of monthly climate normals (NOAA 1991-2020).

Oak Harbor is about the same temperature as Seattle (52.1°F vs 53.8°F annual avg) and drier than it (19.9 in vs 36.5 in per year). Both cities share a Warm-summer Mediterranean climate (Csb).

Oak Harbor, WA

Annual avg
52.1°F
Annual precip
19.9 in
Warmest month
August (69.7°F)
Coldest month
February (37.2°F)
Annual swing
18.5°F
Pleasant months
4 / 12
Warm-summer Mediterranean Csb USDA Zone 9a

Seattle, WA

Annual avg
53.8°F
Annual precip
36.5 in
Warmest month
August (77.4°F)
Coldest month
December (36.2°F)
Annual swing
25.8°F
Pleasant months
4 / 12
Warm-summer Mediterranean Csb USDA Zone 9a

Best months to visit each city

Oak Harbor

J
F
M
A
M
J
J
A
S
O
N
D

Seattle

J
F
M
A
M
J
J
A
S
O
N
D

Month-by-month comparison

Month Oak Harbor Seattle
High Low Precip High Low Precip
January 49.3°F 38.1°F 2.43 in 48.6°F 36.8°F 5.21 in
February 51.1°F 37.2°F 1.63 in 50.7°F 36.8°F 3.71 in
March 54.5°F 40.1°F 1.68 in 54.8°F 39.4°F 3.94 in
April 58.4°F 43.4°F 1.69 in 59.8°F 43.6°F 2.89 in
May 62.0°F 48.0°F 1.69 in 66.5°F 49.3°F 1.98 in
June 65.8°F 51.5°F 1.12 in 71.2°F 54.0°F 1.22 in
July 69.0°F 54.0°F 0.63 in 77.3°F 57.5°F 0.56 in
August 69.7°F 53.9°F 0.85 in 77.4°F 58.1°F 0.83 in
September 66.8°F 50.2°F 1.08 in 71.7°F 53.9°F 1.37 in
October 60.2°F 45.6°F 2.04 in 61.0°F 46.4°F 3.49 in
November 53.5°F 40.9°F 3.13 in 53.0°F 39.9°F 5.80 in
December 48.7°F 37.8°F 1.95 in 47.8°F 36.2°F 5.49 in
Oak Harbor overview
Full climate profile
 Seattle overview
Full climate profile