Plymouth weather in December
In December, Plymouth sees average daytime highs of 26°C and overnight lows near 25°C, with 60 mm of rain across 14.7 wet days and about 11 hours of daylight. It is the 8th-warmest and 6th-wettest month of the year here.
Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 73% of the time in December, and the air most often feels oppressive.
Daylight stretches from about 11 h 06 min at the start of December to 11 hours by month's end. Set against the rest of the year, December is Plymouth's 4th-clearest and 5th-windiest month. For the whole year in context, see Plymouth's year-round climate.
- Daytime high
- 26°
- 8th warmest
- Overnight low
- 25°
- 5th coldest
- Rainfall
- 60 mm
- 14.7 wet days
- Daylight
- 11 hours
- 6:35 AM – 5:35 PM
- Cloud cover
- 34%
- 4th clearest
- Wind
- 27 km/h
- 5th windiest
- Solar energy
- 4.68 kWh/m²
- Travel score
- 6.4
- out of 10
Plymouth is de jure capital of Montserrat, West Indies, now a ghost town.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 26°C through the month.
A typical December day in Plymouth reaches about 26°C in the afternoon and slips back to 25°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 27°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 27 | 25 |
| 2 | 27 | 25 |
| 3 | 27 | 25 |
| 4 | 27 | 25 |
| 5 | 27 | 25 |
| 6 | 27 | 25 |
| 7 | 27 | 25 |
| 8 | 27 | 25 |
| 9 | 27 | 25 |
| 10 | 27 | 25 |
| 11 | 26 | 25 |
| 12 | 26 | 25 |
| 13 | 26 | 25 |
| 14 | 26 | 25 |
| 15 | 26 | 25 |
| 16 | 26 | 25 |
| 17 | 26 | 25 |
| 18 | 26 | 25 |
| 19 | 26 | 25 |
| 20 | 26 | 25 |
| 21 | 26 | 25 |
| 22 | 26 | 25 |
| 23 | 26 | 25 |
| 24 | 26 | 25 |
| 25 | 26 | 25 |
| 26 | 26 | 25 |
| 27 | 26 | 25 |
| 28 | 26 | 25 |
| 29 | 26 | 25 |
| 30 | 26 | 25 |
| 31 | 26 | 25 |
How December really feels in Plymouth
Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Plymouth weather by month
How December compares with the rest of the year at a glance. December is the 8th-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 26° / 24° | 35 | 11.7 | 11.1 | 7.1 |
| Feb | 25° / 24° | 22 | 7.8 | 11.4 | 7.6 |
| Mar | 26° / 24° | 19 | 7.2 | 11.9 | 7.8 |
| Apr | 26° / 25° | 30 | 8.3 | 12.4 | 7.3 |
| May | 27° / 26° | 54 | 10.7 | 12.8 | 6.6 |
| Jun | 27° / 26° | 43 | 10.4 | 13 | 6.4 |
| Jul | 28° / 26° | 71 | 15.3 | 12.9 | 5.9 |
| Aug | 28° / 26° | 88 | 16.6 | 12.6 | 5.6 |
| Sep | 28° / 26° | 116 | 17.2 | 12.1 | 5.1 |
| Oct | 28° / 26° | 121 | 17.7 | 11.6 | 5.4 |
| Nov | 27° / 26° | 97 | 15.9 | 11.2 | 5.8 |
| Dec | 26° / 25° | 60 | 14.7 | 11 | 6.4 |
Cloud cover in December
The sky is clear or mostly clear about 73% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 83 | 83 | 83 | 84 | 85 | 85 | 85 | 85 | 86 | 86 | 85 | 86 | 86 | 86 | 87 | 87 | 88 | 88 | 88 | 89 | 90 | 90 | 90 |
| Cloudier (%) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 15 | 14 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 10 | 10 | 10 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 82 | 18 |
| 2 | 82 | 18 |
| 3 | 82 | 18 |
| 4 | 82 | 18 |
| 5 | 82 | 18 |
| 6 | 82 | 18 |
| 7 | 82 | 18 |
| 8 | 82 | 18 |
| 9 | 83 | 17 |
| 10 | 83 | 17 |
| 11 | 83 | 17 |
| 12 | 84 | 16 |
| 13 | 85 | 15 |
| 14 | 85 | 15 |
| 15 | 85 | 15 |
| 16 | 85 | 15 |
| 17 | 86 | 14 |
| 18 | 86 | 14 |
| 19 | 85 | 15 |
| 20 | 86 | 14 |
| 21 | 86 | 14 |
| 22 | 86 | 14 |
| 23 | 87 | 13 |
| 24 | 87 | 13 |
| 25 | 88 | 12 |
| 26 | 88 | 12 |
| 27 | 88 | 12 |
| 28 | 89 | 11 |
| 29 | 90 | 10 |
| 30 | 90 | 10 |
| 31 | 90 | 10 |
Chance of precipitation in December
Plymouth gets around 60 mm of rain over 14.7 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 47% and peaks near 50% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 47 | 48 | 48 | 48 | 49 | 49 | 49 | 50 | 50 | 50 | 50 | 50 | 49 | 49 | 48 | 48 | 47 | 47 | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 |
| Rain chance (%) | |
|---|---|
| 1 | 47 |
| 2 | 48 |
| 3 | 48 |
| 4 | 48 |
| 5 | 49 |
| 6 | 49 |
| 7 | 49 |
| 8 | 50 |
| 9 | 50 |
| 10 | 50 |
| 11 | 50 |
| 12 | 50 |
| 13 | 49 |
| 14 | 49 |
| 15 | 48 |
| 16 | 48 |
| 17 | 47 |
| 18 | 47 |
| 19 | 46 |
| 20 | 46 |
| 21 | 45 |
| 22 | 45 |
| 23 | 45 |
| 24 | 44 |
| 25 | 44 |
| 26 | 44 |
| 27 | 44 |
| 28 | 44 |
| 29 | 44 |
| 30 | 44 |
| 31 | 44 |
Humidity in December
Most of December feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the oppressive band about 76% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Muggy (%) | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 19 | 19 | 20 | 21 | 22 | 22 | 23 | 24 | 25 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 30 |
| Oppressive (%) | 81 | 80 | 80 | 80 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 80 | 80 | 79 | 79 | 78 | 77 | 76 | 76 | 75 | 74 | 73 | 72 | 72 | 71 | 71 | 70 | 70 | 69 | 69 | 68 |
| Miserable (%) | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 2 | 16 | 81 | 1 |
| 2 | 2 | 17 | 80 | 1 |
| 3 | 2 | 17 | 80 | 1 |
| 4 | 2 | 17 | 80 | 1 |
| 5 | 2 | 17 | 81 | 0 |
| 6 | 2 | 17 | 81 | 0 |
| 7 | 2 | 17 | 81 | 0 |
| 8 | 2 | 17 | 81 | 0 |
| 9 | 2 | 17 | 81 | 0 |
| 10 | 2 | 17 | 81 | 0 |
| 11 | 2 | 17 | 81 | 0 |
| 12 | 2 | 18 | 80 | 0 |
| 13 | 2 | 18 | 80 | 0 |
| 14 | 2 | 19 | 79 | 0 |
| 15 | 2 | 19 | 79 | 0 |
| 16 | 2 | 20 | 78 | 0 |
| 17 | 2 | 21 | 77 | 0 |
| 18 | 2 | 22 | 76 | 0 |
| 19 | 2 | 22 | 76 | 0 |
| 20 | 2 | 23 | 75 | 0 |
| 21 | 2 | 24 | 74 | 0 |
| 22 | 2 | 25 | 73 | 0 |
| 23 | 2 | 26 | 72 | 0 |
| 24 | 2 | 26 | 72 | 0 |
| 25 | 2 | 27 | 71 | 0 |
| 26 | 2 | 27 | 71 | 0 |
| 27 | 2 | 28 | 70 | 0 |
| 28 | 2 | 28 | 70 | 0 |
| 29 | 2 | 29 | 69 | 0 |
| 30 | 2 | 29 | 69 | 0 |
| 31 | 2 | 30 | 68 | 0 |
Wind in December
Winds average 27 km/h in December.
Across December, daily wind ranges from about 26 km/h on the calmest days to 29 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 |
| Feels | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | windy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 26 | breezy |
| 2 | 26 | breezy |
| 3 | 26 | breezy |
| 4 | 26 | breezy |
| 5 | 27 | breezy |
| 6 | 27 | breezy |
| 7 | 27 | breezy |
| 8 | 27 | breezy |
| 9 | 27 | breezy |
| 10 | 27 | breezy |
| 11 | 27 | breezy |
| 12 | 27 | breezy |
| 13 | 27 | breezy |
| 14 | 27 | breezy |
| 15 | 27 | breezy |
| 16 | 27 | breezy |
| 17 | 27 | breezy |
| 18 | 27 | breezy |
| 19 | 27 | breezy |
| 20 | 28 | breezy |
| 21 | 28 | breezy |
| 22 | 28 | breezy |
| 23 | 28 | breezy |
| 24 | 28 | breezy |
| 25 | 28 | breezy |
| 26 | 28 | breezy |
| 27 | 28 | breezy |
| 28 | 29 | breezy |
| 29 | 29 | breezy |
| 30 | 29 | breezy |
| 31 | 29 | windy |
Sunrise & sunset in December
Daylight runs from about 11 h 06 min at the start of December to 11 hours by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over December. Sunrise moves from 6:26 AM to 6:42 AM, and sunset from 5:31 PM to 5:43 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Sunrise (AM) | 6:26 | 6:27 | 6:28 | 6:28 | 6:29 | 6:29 | 6:30 | 6:30 | 6:31 | 6:31 | 6:32 | 6:33 | 6:33 | 6:34 | 6:34 | 6:35 | 6:35 | 6:36 | 6:36 | 6:37 | 6:37 | 6:38 | 6:38 | 6:39 | 6:39 | 6:40 | 6:40 | 6:40 | 6:41 | 6:41 | 6:42 |
| Sunset (PM) | 5:31 | 5:31 | 5:31 | 5:31 | 5:32 | 5:32 | 5:32 | 5:32 | 5:33 | 5:33 | 5:33 | 5:34 | 5:34 | 5:35 | 5:35 | 5:35 | 5:36 | 5:36 | 5:37 | 5:37 | 5:37 | 5:38 | 5:38 | 5:39 | 5:39 | 5:40 | 5:40 | 5:41 | 5:41 | 5:42 | 5:43 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.1 | 6:26 | 5:31 |
| 2 | 11.1 | 6:27 | 5:31 |
| 3 | 11.1 | 6:28 | 5:31 |
| 4 | 11.1 | 6:28 | 5:31 |
| 5 | 11.1 | 6:29 | 5:32 |
| 6 | 11.0 | 6:29 | 5:32 |
| 7 | 11.0 | 6:30 | 5:32 |
| 8 | 11.0 | 6:30 | 5:32 |
| 9 | 11.0 | 6:31 | 5:33 |
| 10 | 11.0 | 6:31 | 5:33 |
| 11 | 11.0 | 6:32 | 5:33 |
| 12 | 11.0 | 6:33 | 5:34 |
| 13 | 11.0 | 6:33 | 5:34 |
| 14 | 11.0 | 6:34 | 5:35 |
| 15 | 11.0 | 6:34 | 5:35 |
| 16 | 11.0 | 6:35 | 5:35 |
| 17 | 11.0 | 6:35 | 5:36 |
| 18 | 11.0 | 6:36 | 5:36 |
| 19 | 11.0 | 6:36 | 5:37 |
| 20 | 11.0 | 6:37 | 5:37 |
| 21 | 11.0 | 6:37 | 5:37 |
| 22 | 11.0 | 6:38 | 5:38 |
| 23 | 11.0 | 6:38 | 5:38 |
| 24 | 11.0 | 6:39 | 5:39 |
| 25 | 11.0 | 6:39 | 5:39 |
| 26 | 11.0 | 6:40 | 5:40 |
| 27 | 11.0 | 6:40 | 5:40 |
| 28 | 11.0 | 6:40 | 5:41 |
| 29 | 11.0 | 6:41 | 5:41 |
| 30 | 11.0 | 6:41 | 5:42 |
| 31 | 11.0 | 6:42 | 5:43 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 4.68 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 4.68 kWh/m² to a high of 6.77 kWh/m² in April across the year — December's 4.68 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.8 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.7 | Bright |
| 4 | 4.7 | Bright |
| 5 | 4.7 | Bright |
| 6 | 4.7 | Bright |
| 7 | 4.7 | Bright |
| 8 | 4.7 | Bright |
| 9 | 4.7 | Bright |
| 10 | 4.7 | Bright |
| 11 | 4.7 | Bright |
| 12 | 4.7 | Bright |
| 13 | 4.7 | Bright |
| 14 | 4.7 | Bright |
| 15 | 4.7 | Bright |
| 16 | 4.7 | Bright |
| 17 | 4.7 | Bright |
| 18 | 4.7 | Bright |
| 19 | 4.7 | Bright |
| 20 | 4.7 | Bright |
| 21 | 4.7 | Bright |
| 22 | 4.7 | Bright |
| 23 | 4.7 | Bright |
| 24 | 4.7 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.7 | Bright |
| 27 | 4.7 | Bright |
| 28 | 4.7 | Bright |
| 29 | 4.7 | Bright |
| 30 | 4.7 | Bright |
| 31 | 4.7 | Bright |
Hazard calendar for Plymouth
In December, Plymouth sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Plymouth sits in the Atlantic hurricane belt; the season peaks August–October.
Plymouth's rainy season runs July–December, when most of the year's rain falls.
Plymouth sees seasonal dust haze (June–July), heaviest in July.
Is December a good time to visit Plymouth?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Plymouth for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Plymouth in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Plymouth sees daytime highs around 26°C and nights near 25°C. Pack rain gear. Worth having: light clothes, sun protection and a windbreaker. About 15 days see rain.
Sea temperature near Plymouth in December
The nearest coast averages about 28°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 13 km away) is warmest in September at about 29°C and coldest in February near 26°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 26 | 26 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 26 | Warm |
| Mar | 26 | Warm |
| Apr | 27 | Warm |
| May | 28 | Warm |
| Jun | 28 | Warm |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 28 | Warm |
UV index in Plymouth in December
Clear-sky midday UV in December peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Plymouth peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 11 | 13 | 13 | 12 | 12 | 12 | 11 | 12 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | Very high |
Air quality in Plymouth in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Plymouth is worst in June — around 26 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (December, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 11 | 10 | 12 | 16 | 26 | 25 | 22 | 17 | 18 | 11 | 8 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 11 | Good |
| Mar | 10 | Good |
| Apr | 12 | Moderate |
| May | 16 | Moderate |
| Jun | 26 | Moderate |
| Jul | 25 | Moderate |
| Aug | 22 | Moderate |
| Sep | 17 | Moderate |
| Oct | 18 | Moderate |
| Nov | 11 | Good |
| Dec | 8 | Good |
Where is Plymouth?
Plymouth sits at 16.7°N, 62.2°W, 77 m above sea level, in Montserrat. The nearest listed city is Brades, 10 km away.
Topography around Plymouth
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Plymouth.
Within 3 km, the terrain around Plymouth has large variations in elevation — a maximum elevation change of 805 m around an average of 118 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,037 m; within 80 km, large variations in elevation — a maximum elevation change of 1,012 m.
The land around Plymouth is covered by trees (43%) and water (36%) within 3 km, water (88%) within 16 km, and water (94%) within 80 km.
Montserrat travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 230 V · 60 Hz
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Plymouth (16.7055°, -62.2129°, elevation 77 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).