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:
25°C
77.0°F
°C °F

Condition: Overcast

Pressure: 1,017 hPa

Feel like: 25 °C

Temperature: 25°C

Cloud: 98%

Humidity: 50%

Wind: SW - 14 km/h

Visibility: 30.0 km

Weather forecast

Sun
21 Jun
19°C / 28°C
Overcast
Mon
22 Jun
19°C / 35°C
Slight Thunderstorm
Tue
23 Jun
25°C / 34°C
Slight Thunderstorm
Wed
24 Jun
21°C / 31°C
Slight Thunderstorm
Thu
25 Jun
23°C / 31°C
Slight Thunderstorm
Hourly forecast today:
13:00 PM
14° / 25°
14° / 25°
Overcast
50% 30 km/h
14:00 PM
14° / 26°
14° / 26°
Overcast
49% 29 km/h
15:00 PM
14° / 25°
14° / 25°
Overcast
50% 27 km/h
16:00 PM
15° / 24°
15° / 24°
Overcast
55% 23 km/h
17:00 PM
15° / 24°
15° / 24°
Overcast
57% 21 km/h
18:00 PM
15° / 24°
15° / 24°
Overcast
58% 17 km/h
19:00 PM
15° / 23°
15° / 23°
Partly Cloudy
60% 14 km/h
20:00 PM
16° / 23°
16° / 23°
Overcast
63% 9 km/h
21:00 PM
16° / 22°
16° / 22°
Clear Sky
69% 17 km/h
22:00 PM
16° / 21°
16° / 21°
Mainly Clear
74% 16 km/h
23:00 PM
16° / 20°
16° / 20°
Mainly Clear
78% 8 km/h

30 Day Averages and Extremes

  • Average high 22.1°C
  • Average low 14.63°C
  • Hottest day 35°C (22 June 2026)
  • Coldest day 0°C (03 July 2026)
  • Average humidity 62.03%
  • Days with precipitation 23 days
  • Highest precipitation 66 mm (05 June 2026)

Yesterday's Data

  • Max: 26°C
  • Min: 17°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:
- Broad-brimmed sun hat
- Airy sandals or flip-flops
- High SPF sunscreen for outdoor activities
- Sleeveless tops or vests

Temperature

Early
15°C / 17°C
Morning
16°C / 22°C
Afternoon
14°C / 25°C
Evening
16°C / 22°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 445
  • CO 113
  • NH3 0
  • NO2 5
  • O3 59
  • PM10 5
  • PM25 3
  • SO2 0
  • CH4 1,351

Sunrise / Sunset

03:43
20:21