Plymouth climate: monthly averages: annual mean temperature 10.8 C; warmest month Jul (15.9 C); coldest month Feb (6.1 C).
Annual mean temperature: 10.8 C
Warmest month: Jul (15.9 C)
Coldest month: Feb (6.1 C)
Wettest month: Nov (4.33 mm/day)
All-time record high: 25.5 C
All-time record low: -4.1 C
One page for Plymouth climate: monthly averages, sourced from public APIs and refreshed automatically. Expect 6.1 C at the coldest (Feb) and 15.9 C at the warmest (Jul) — a 9.8 C spread. Expect a wet month and a dry month but no real season: 4.33 mm/day in Nov against 2.26 mm/day in Apr. Taken together that is roughly 1,162 mm of rain a year for the grid cell. Values come from a public open API; a successful result is cached so a later outage never blanks the page. Exact monthly values are in the table; links below cover adjacent locations and years.
Annual mean temperature 10.8 C
Warmest month Jul (15.9 C)
Coldest month Feb (6.1 C)
Wettest month Nov (4.33 mm/day)
All-time record high 25.5 C
All-time record low -4.1 C
Annual precipitation 1,164 mm / year
Coordinates 50.37153, -4.14305
Population 260,203
Average monthly temperature and rainfall in Plymouth
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
6.6
3.97
12.8
-2.8
Feb
6.1
3.44
13.3
-3.9
Mar
7.1
2.84
15.9
-4.1
Apr
9.0
2.26
20.1
-0.5
May
11.5
2.30
21.5
3.4
Jun
14.2
2.62
24.0
6.2
Jul
15.9
2.87
25.5
9.2
Aug
15.9
3.08
24.4
8.8
Sep
14.4
2.28
22.8
5.7
Oct
12.1
4.02
20.2
2.2
Nov
9.3
4.33
16.7
-1.7
Dec
7.4
4.23
13.6
-2.3
What the Plymouth climate table shows
Values are multi-decadal climatological averages for the 50.37153, -4.14305 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
Why do the numbers differ from a weather app?
An app shows one location on one day. These are long-run averages, so they smooth out single hot or cold spells.
How much rain is 4.33 mm/day in a month?
Rain is recorded as a daily mean, so 4.33 mm/day is roughly 132 mm across a 30-day month.