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Concarneau vs Seattle
Comparing Concarneau change · Seattle change
Concarneau and Seattle have nearly identical year-round temperatures; Seattle is the wetter, with 157 mm more rain a year, and Seattle the sunnier.
How the seasons compare
The differences between Concarneau and Seattle, in everyday terms.
Summers
Seattle has hotter summers
Concarneau: Mild
Seattle: Mild
Winters
Winters are similar
Concarneau: Chilly
Seattle: Chilly
Rain & snow
Seattle is wetter
Concarneau: Moderate rainfall
Seattle: Moderate rainfall
Sky
Seattle is sunnier
Concarneau: Often grey
Seattle: Often cloudy
Month-by-month charts
Temperature
Concarneau and Seattle run remarkably close all year.
Precipitation
Seattle is the wetter — about 157 mm more across the year.
Clear skies
Seattle has the clearer skies — the higher line.
Exact monthly numbers
Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.
Avg high (°C) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Concarneau | 10 | 10 | 12 | 14 | 17 | 20 | 22 | 22 | 20 | 16 | 13 | 10 |
| Seattle | 9 | 10 | 12 | 15 | 19 | 22 | 25 | 25 | 22 | 16 | 11 | 8 |
| Difference | -1 | — | — | +1 | +2 | +2 | +4 | +4 | +2 | — | -1 | -2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Concarneau | 10 | 10 | 12 | 14 | 17 | 20 |
| Seattle | 9 | 10 | 12 | 15 | 19 | 22 |
| Difference | -1 | — | — | +1 | +2 | +2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Concarneau | 22 | 22 | 20 | 16 | 13 | 10 |
| Seattle | 25 | 25 | 22 | 16 | 11 | 8 |
| Difference | +4 | +4 | +2 | — | -1 | -2 |
Avg low (°C) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Concarneau | 4 | 4 | 5 | 6 | 9 | 12 | 13 | 13 | 11 | 9 | 7 | 5 |
| Seattle | 3 | 3 | 4 | 6 | 9 | 12 | 14 | 14 | 12 | 8 | 5 | 3 |
| Difference | -1 | -1 | -1 | — | — | — | +1 | +1 | +1 | -1 | -2 | -2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Concarneau | 4 | 4 | 5 | 6 | 9 | 12 |
| Seattle | 3 | 3 | 4 | 6 | 9 | 12 |
| Difference | -1 | -1 | -1 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Concarneau | 13 | 13 | 11 | 9 | 7 | 5 |
| Seattle | 14 | 14 | 12 | 8 | 5 | 3 |
| Difference | +1 | +1 | +1 | -1 | -2 | -2 |
Precipitation (mm) Seattle runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Concarneau | 100 | 90 | 59 | 56 | 47 | 52 | 52 | 45 | 39 | 86 | 108 | 107 |
| Seattle | 147 | 96 | 106 | 81 | 48 | 37 | 15 | 25 | 41 | 99 | 160 | 145 |
| Difference | +47 | +6 | +47 | +24 | +1 | -16 | -37 | -20 | +1 | +13 | +52 | +39 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Concarneau | 100 | 90 | 59 | 56 | 47 | 52 |
| Seattle | 147 | 96 | 106 | 81 | 48 | 37 |
| Difference | +47 | +6 | +47 | +24 | +1 | -16 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Concarneau | 52 | 45 | 39 | 86 | 108 | 107 |
| Seattle | 15 | 25 | 41 | 99 | 160 | 145 |
| Difference | -37 | -20 | +1 | +13 | +52 | +39 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Concarneau | — | — | — | — | — | — | — | — | — | — | — | — |
| Seattle | 5 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Concarneau | — | — | — | — | — | — |
| Seattle | 5 | 6 | 1 | 0 | 0 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Concarneau | — | — | — | — | — | — |
| Seattle | 0 | 0 | 0 | 0 | 1 | 4 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Concarneau runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Concarneau | 84 | 81 | 76 | 69 | 68 | 66 | 65 | 66 | 65 | 74 | 81 | 83 |
| Seattle | 76 | 72 | 74 | 73 | 69 | 66 | 48 | 48 | 51 | 66 | 75 | 75 |
| Difference | -8 | -10 | -2 | +3 | +1 | — | -17 | -18 | -14 | -8 | -6 | -8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Concarneau | 84 | 81 | 76 | 69 | 68 | 66 |
| Seattle | 76 | 72 | 74 | 73 | 69 | 66 |
| Difference | -8 | -10 | -2 | +3 | +1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Concarneau | 65 | 66 | 65 | 74 | 81 | 83 |
| Seattle | 48 | 48 | 51 | 66 | 75 | 75 |
| Difference | -17 | -18 | -14 | -8 | -6 | -8 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Concarneau | 88 | 87 | 86 | 84 | 83 | 82 | 81 | 80 | 81 | 85 | 86 | 88 |
| Seattle | 90 | 87 | 85 | 82 | 80 | 80 | 78 | 76 | 77 | 83 | 89 | 90 |
| Difference | +3 | — | -1 | -2 | -3 | -2 | -3 | -4 | -4 | -1 | +3 | +3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Concarneau | 88 | 87 | 86 | 84 | 83 | 82 |
| Seattle | 90 | 87 | 85 | 82 | 80 | 80 |
| Difference | +3 | — | -1 | -2 | -3 | -2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Concarneau | 81 | 80 | 81 | 85 | 86 | 88 |
| Seattle | 78 | 76 | 77 | 83 | 89 | 90 |
| Difference | -3 | -4 | -4 | -1 | +3 | +3 |
How both climates are changing
Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Concarneau trends → · Seattle trends →
Methodology & sources
Concarneau
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Quimper Pluguffan, a weather station, about 22 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
Seattle
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Seattle Tacoma AP (NOAA GHCN station USW00024233), about 18 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
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