Surrey climate: monthly averages: annual mean temperature 10.6 C; warmest month Aug (18.3 C); coldest month Dec (4.3 C).
Annual mean temperature: 10.6 C
Warmest month: Aug (18.3 C)
Coldest month: Dec (4.3 C)
Wettest month: Nov (6.86 mm/day)
All-time record high: 31.9 C
All-time record low: -10.7 C
Surrey’s long-term climate averages show a mild but variable year-round pattern. The annual mean temperature is **10.6°C**, with August as the warmest month at **18.3°C** and December the coldest at **4.3°C**. Rainfall totals around **1,281 mm yearly**, peaking in November (6.86 mm/day). Extreme temperatures range from **31.9°C** (record high) to **-10.7°C** (record low). |November, with about **6.86 mm of rain per day** on average. |Summer (June–August) averages **15–18°C**, while winter (Dec–Feb) stays around **2–6°C**.
Annual mean temperature 10.6 C
Warmest month Aug (18.3 C)
Coldest month Dec (4.3 C)
Wettest month Nov (6.86 mm/day)
All-time record high 31.9 C
All-time record low -10.7 C
Annual precipitation 1,281 mm / year
Coordinates 49.10635, -122.82509
Population 568,322
Average monthly temperature and rainfall in Surrey
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
4.5
6.26
12.3
-10.7
Feb
4.7
3.63
13.6
-7.2
Mar
6.5
4.57
17.4
-4.7
Apr
9.1
2.91
22.8
0.8
May
12.8
1.93
28.3
4.2
Jun
15.3
1.54
29.5
6.6
Jul
18.1
0.83
31.9
10.3
Aug
18.3
1.07
31.0
10.4
Sep
15.3
2.35
28.3
7.8
Oct
10.8
4.50
20.7
0.9
Nov
6.9
6.86
15.9
-8.8
Dec
4.3
5.72
13.2
-9.4
What the Surrey climate table shows
Values are multi-decadal climatological averages for the 49.10635, -122.82509 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.