Merton, United Kingdom Weather

  1. Merton, United Kingdom Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Merton over the next 12 hours
  7. Temperature and possibility of rain in Merton in the coming days
  8. Rainfall in Merton in the coming days
  9. Merton Weather Summary
  10. Weather averages by month
  11. Merton's weather
  12. Frequently asked questions
  13. Comments
Merton, Weather
(Photo by Viktor Forgacs on Unsplash)

Current conditions

Updated:
26°C
78.8°F
°C °F

Condition: Overcast

Pressure: 1,017 hPa

Feel like: 24 °C

Temperature: 26°C

Cloud: 100%

Humidity: 29%

Wind: SSW - 14 km/h

Visibility: 41.28 km

Weather forecast

Sun
09 Aug
18°C / 25°C
Overcast
Mon
10 Aug
17°C / 26°C
Clear Sky
Tue
11 Aug
18°C / 31°C
Overcast
Wed
12 Aug
23°C / 32°C
Mainly Clear
Thu
13 Aug
21°C / 31°C
Partly Cloudy
Hourly forecast today:
12:00 PM
6° / 26°
6° / 26°
Overcast
29% 32 km/h
13:00 PM
6° / 27°
6° / 27°
Mainly Clear
26% 34 km/h
14:00 PM
6° / 27°
6° / 27°
Overcast
25% 36 km/h
15:00 PM
5° / 27°
5° / 27°
Overcast
25% 37 km/h
16:00 PM
5° / 27°
5° / 27°
Overcast
25% 33 km/h
17:00 PM
5° / 26°
5° / 26°
Overcast
26% 31 km/h
18:00 PM
5° / 25°
5° / 25°
Overcast
27% 28 km/h
19:00 PM
5° / 24°
5° / 24°
Clear Sky
30% 18 km/h
20:00 PM
7° / 23°
7° / 23°
Clear Sky
36% 12 km/h
21:00 PM
7° / 22°
7° / 22°
Clear Sky
38% 15 km/h
22:00 PM
8° / 20°
8° / 20°
Clear Sky
47% 16 km/h

30 Day Averages and Extremes

  • Average high 24.43°C
  • Average low 15.67°C
  • Hottest day 32°C (28 July 2026)
  • Coldest day 0°C (21 August 2026)
  • Average humidity 51.43%
  • Days with precipitation 13 days
  • Highest precipitation 24 mm (29 July 2026)

Yesterday's Data

  • Max: 27°C
  • Min: 14°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Merton over the next 12 hours

Temperature and possibility of rain in Merton in the coming days

Rainfall in Merton in the coming days

Merton Climate Summary

Merton features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 12.1ºC (53.78ºF), which is about 1.35% higher than the national average for United Kingdom. Annually, the city experiences approximately 45.27 millimeters (1.78 inches) of rainfall, spread across 113.19 rainy days, accounting for 31.01% of the year.

Longitude 51.4097742
Latitude -0.2108084
Yearly high temperature 14.5ºC (58.1ºF)
Yearly low temperature 7.68ºC (45.82ºF)
Hottest month August 21.82ºC (71.28ºF)
Coldest month December 3.79ºC (38.82ºF)
Yearly precip 45.27mm (1.78in)
Days with rainfall 113.19 days (31.01%)
Driest month April (77.15%)
Wettest month October (81.56%)

Weather averages by month

Month High / Low (°C) Rain
January 6.99° / 2.36° 9.91 days
February 7.82° / 2.76° 9.0 days
March 10.71° / 3.8° 7.73 days
April 14.29° / 5.66° 8.0 days
May 16.85° / 8.27° 9.55 days
June 19.87° / 11.07° 11.36 days
July 22.53° / 13.68° 11.18 days
August 21.82° / 13.86° 9.82 days
September 19.45° / 11.63° 7.64 days
October 15.14° / 9.36° 9.82 days
November 10.61° / 5.95° 9.73 days
December 7.98° / 3.79° 9.45 days

Merton's weather

Frequently asked questions

1. What is the hottest month in Merton?

August has the highest average monthly temperature (daily mean of 21.82ºC) and December are the coolest (daily mean of 3.79ºC).

2. What should I wear in Merton today?

For today's very hot weather in Merton, with the high temperatures above 31ºC (87.8ºF), consider wearing:
- High SPF sunscreen for outdoor activities
- Light, natural fabrics (like cotton or linen)
- UV-blocking sunglasses
- Airy sandals or flip-flops

Temperature

Early
9°C / 15°C
Morning
9°C / 21°C
Afternoon
5°C / 27°C
Evening
7°C / 22°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 436
  • CO 149
  • NH3 2
  • NO2 5
  • O3 94
  • PM10 9
  • PM25 5
  • SO2 1
  • CH4 1,372

Sunrise / Sunset

04:37
19:35