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:
20°C
68.0°F
°C °F

Condition: Mainly Clear

Pressure: 1,009 hPa

Feel like: 19 °C

Temperature: 20°C

Cloud: 41%

Humidity: 78%

Wind: SW - 16 km/h

Visibility: 24.8 km

Weather forecast

Wed
05 Aug
14°C / 21°C
Overcast
Thu
06 Aug
15°C / 21°C
Overcast
Fri
07 Aug
16°C / 25°C
Mainly Clear
Sat
08 Aug
18°C / 25°C
Overcast
Sun
09 Aug
18°C / 23°C
Overcast
Hourly forecast today:
23:00 PM
16° / 20°
16° / 20°
Mainly Clear
78% 32 km/h
00:00 AM
16° / 19°
16° / 19°
Partly Cloudy
79% 29 km/h
01:00 AM
16° / 19°
16° / 19°
Overcast
80% 29 km/h
02:00 AM
15° / 19°
15° / 19°
Overcast
80% 30 km/h
03:00 AM
15° / 19°
15° / 19°
Mainly Clear
79% 33 km/h
04:00 AM
15° / 18°
15° / 18°
Overcast
80% 29 km/h
05:00 AM
15° / 18°
15° / 18°
Overcast
81% 37 km/h
06:00 AM
14° / 18°
14° / 18°
Mainly Clear
76% 32 km/h
07:00 AM
12° / 18°
12° / 18°
Partly Cloudy
66% 39 km/h
08:00 AM
11° / 18°
11° / 18°
Overcast
62% 32 km/h
09:00 AM
11° / 19°
11° / 19°
Partly Cloudy
58% 38 km/h

30 Day Averages and Extremes

  • Average high 24.63°C
  • Average low 15.9°C
  • Hottest day 32°C (28 July 2026)
  • Coldest day 0°C (17 August 2026)
  • Average humidity 49.4%
  • Days with precipitation 13 days
  • Highest precipitation 17 mm (29 July 2026)

Yesterday's Data

  • Max: 28°C
  • Min: 19°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 warm weather in Merton, with temperatures between 21ºC to 24ºC (69.8ºF to 75.2ºF), you might consider wearing:
- Sun hat or cap
- Light, breathable socks
- T-shirt or short-sleeve blouse
- Shorts or lightweight trousers

Temperature

Early
16°C / 20°C
Morning
13°C / 24°C
Afternoon
13°C / 27°C
Evening
16°C / 20°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 441
  • CO 112
  • NH3 0
  • NO2 6
  • O3 54
  • PM10 8
  • PM25 4
  • SO2 0
  • CH4 1,356

Sunrise / Sunset

04:31
19:42