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:
18°C
64.4°F
°C °F

Condition: Overcast

Pressure: 1,013 hPa

Feel like: 16 °C

Temperature: 18°C

Cloud: 100%

Humidity: 68%

Wind: SW - 21 km/h

Visibility: 27.46 km

Weather forecast

Sun
20 Sep
12°C / 21°C
Overcast
Mon
21 Sep
15°C / 22°C
Mainly Clear
Tue
22 Sep
15°C / 19°C
Overcast
Wed
23 Sep
11°C / 18°C
Overcast
Thu
24 Sep
13°C / 20°C
Overcast
Hourly forecast today:
09:00 AM
12° / 18°
12° / 18°
Overcast
68% 42 km/h
10:00 AM
13° / 18°
13° / 18°
Overcast
71% 46 km/h
11:00 AM
13° / 20°
13° / 20°
Mainly Clear
66% 48 km/h
12:00 PM
14° / 20°
14° / 20°
Overcast
66% 47 km/h
13:00 PM
15° / 21°
15° / 21°
Overcast
68% 47 km/h
14:00 PM
15° / 21°
15° / 21°
Overcast
67% 46 km/h
15:00 PM
15° / 21°
15° / 21°
Overcast
69% 45 km/h
16:00 PM
16° / 21°
16° / 21°
Overcast
73% 37 km/h
17:00 PM
16° / 20°
16° / 20°
Drizzle
81% 32 km/h
18:00 PM
17° / 19°
17° / 19°
Drizzle
88% 29 km/h
19:00 PM
16° / 18°
16° / 18°
Drizzle
88% 29 km/h

30 Day Averages and Extremes

  • Average high 19.37°C
  • Average low 13.03°C
  • Hottest day 27°C (27 September 2026)
  • Coldest day 0°C (02 October 2026)
  • Average humidity 66.23%
  • Days with precipitation 21 days
  • Highest precipitation 63 mm (07 September 2026)

Yesterday's Data

  • Max: 21°C
  • Min: 16°C
  • Total Precipitation: 3 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 mild weather in Merton, with temperatures between 16ºC to 19ºC (60.8ºF to 66.2ºF), consider wearing:
- Cotton socks
- Casual sneakers or loafers
- Sun hat (if spending time outdoors)
- Light jacket (for cooler periods)

Temperature

Early
14°C / 17°C
Morning
12°C / 18°C
Afternoon
15°C / 21°C
Evening
16°C / 17°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 436
  • CO 168
  • NH3 0
  • NO2 4
  • O3 61
  • PM10 9
  • PM25 4
  • SO2 0
  • CH4 1,363

Sunrise / Sunset

05:43
18:04