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Castries vs Provincetown
Comparing Castries change · Provincetown change
Castries is the warmer of the two — about 17°C on the annual average; Castries is the wetter, with 633 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Provincetown, in everyday terms.
Summers
Summers are nearly the same
Castries: Warm
Provincetown: Warm
Winters
Castries has far milder winters
Castries: Stays warm
Provincetown: Cold
Rain & snow
Castries is wetter
Castries: Very wet
Provincetown: Wet
Sky
Castries is sunnier
Castries: Fairly sunny
Provincetown: Partly cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 17°C on the annual average.
Precipitation
Castries is the wetter — about 633 mm more across the year.
Clear skies
Castries 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) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Provincetown | 3 | 5 | 8 | 15 | 20 | 25 | 28 | 28 | 23 | 17 | 11 | 6 |
| Difference | -23 | -22 | -19 | -13 | -8 | -3 | — | -1 | -6 | -11 | -17 | -21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Provincetown | 3 | 5 | 8 | 15 | 20 | 25 |
| Difference | -23 | -22 | -19 | -13 | -8 | -3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Provincetown | 28 | 28 | 23 | 17 | 11 | 6 |
| Difference | — | -1 | -6 | -11 | -17 | -21 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Provincetown | -6 | -5 | -2 | 4 | 9 | 14 | 17 | 17 | 13 | 7 | 2 | -3 |
| Difference | -31 | -30 | -27 | -23 | -18 | -13 | -10 | -11 | -15 | -21 | -25 | -29 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Provincetown | -6 | -5 | -2 | 4 | 9 | 14 |
| Difference | -31 | -30 | -27 | -23 | -18 | -13 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Provincetown | 17 | 17 | 13 | 7 | 2 | -3 |
| Difference | -10 | -11 | -15 | -21 | -25 | -29 |
Precipitation (mm) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Provincetown | 114 | 101 | 137 | 118 | 96 | 103 | 90 | 97 | 99 | 133 | 113 | 129 |
| Difference | +1 | +25 | +71 | +28 | -18 | -31 | -126 | -194 | -125 | -114 | -130 | -21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Provincetown | 114 | 101 | 137 | 118 | 96 | 103 |
| Difference | +1 | +25 | +71 | +28 | -18 | -31 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Provincetown | 90 | 97 | 99 | 133 | 113 | 129 |
| Difference | -126 | -194 | -125 | -114 | -130 | -21 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — | — | — | — | — | — | — |
| Provincetown | 38 | 37 | 26 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 22 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — |
| Provincetown | 38 | 37 | 26 | 4 | 0 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — |
| Provincetown | 0 | 0 | 0 | 0 | 2 | 22 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Provincetown runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Provincetown | 69 | 66 | 64 | 62 | 64 | 61 | 55 | 51 | 52 | 57 | 65 | 68 |
| Difference | +30 | +27 | +22 | +13 | +11 | +2 | +5 | +5 | +1 | +6 | +18 | +27 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Provincetown | 69 | 66 | 64 | 62 | 64 | 61 |
| Difference | +30 | +27 | +22 | +13 | +11 | +2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Provincetown | 55 | 51 | 52 | 57 | 65 | 68 |
| Difference | +5 | +5 | +1 | +6 | +18 | +27 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Provincetown | 85 | 83 | 82 | 82 | 82 | 82 | 78 | 78 | 78 | 79 | 81 | 83 |
| Difference | +9 | +9 | +7 | +6 | +5 | +3 | — | -1 | — | — | +2 | +6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Provincetown | 85 | 83 | 82 | 82 | 82 | 82 |
| Difference | +9 | +9 | +7 | +6 | +5 | +3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Provincetown | 78 | 78 | 78 | 79 | 81 | 83 |
| Difference | — | -1 | — | — | +2 | +6 |
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. Castries trends → · Provincetown trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Castries
Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Precipitation — 1991–2020 normals computed from 10 years of daily observations at LE Lamentin, a weather station, about 66 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.
Provincetown
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Hingham (NOAA GHCN station USC00193624), about 63 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.
← change Castries · change Provincetown → · Castries page · Provincetown page