San Luis Obispo, CA vs Seattle, WA

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

San Luis Obispo is warmer than Seattle (59.7°F vs 53.8°F annual avg) and drier than it (17.9 in vs 36.5 in per year). Both cities share a Warm-summer Mediterranean climate (Csb).

San Luis Obispo, CA

Annual avg
59.7°F
Annual precip
17.9 in
Warmest month
September (79.5°F)
Coldest month
December (40.2°F)
Annual swing
14.5°F
Pleasant months
4 / 12
Warm-summer Mediterranean Csb USDA Zone 9b

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

San Luis Obispo

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 San Luis Obispo Seattle
High Low Precip High Low Precip
January 65.0°F 40.6°F 3.86 in 48.6°F 36.8°F 5.21 in
February 65.1°F 42.4°F 3.54 in 50.7°F 36.8°F 3.71 in
March 66.7°F 44.5°F 3.17 in 54.8°F 39.4°F 3.94 in
April 69.1°F 45.6°F 1.05 in 59.8°F 43.6°F 2.89 in
May 72.0°F 47.8°F 0.47 in 66.5°F 49.3°F 1.98 in
June 75.2°F 51.1°F 0.10 in 71.2°F 54.0°F 1.22 in
July 78.0°F 54.3°F 0.08 in 77.3°F 57.5°F 0.56 in
August 79.3°F 54.9°F 0.01 in 77.4°F 58.1°F 0.83 in
September 79.5°F 53.4°F 0.04 in 71.7°F 53.9°F 1.37 in
October 77.2°F 49.7°F 0.92 in 61.0°F 46.4°F 3.49 in
November 71.1°F 44.7°F 1.43 in 53.0°F 39.9°F 5.80 in
December 64.9°F 40.2°F 3.27 in 47.8°F 36.2°F 5.49 in
San Luis Obispo overview
Full climate profile
 Seattle overview
Full climate profile