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:
17°C
62.6°F
°C °F

Condition: Clear Sky

Pressure: 1,028 hPa

Feel like: 16 °C

Temperature: 17°C

Cloud: 0%

Humidity: 53%

Wind: N - 5 km/h

Visibility: 22.08 km

Weather forecast

Mon
21 Sep
15°C / 22°C
Partly Cloudy
Tue
22 Sep
14°C / 18°C
Drizzle
Wed
23 Sep
10°C / 18°C
Overcast
Thu
24 Sep
12°C / 20°C
Partly Cloudy
Fri
25 Sep
12°C / 19°C
Overcast
Hourly forecast today:
19:00 PM
7° / 17°
7° / 17°
Clear Sky
53% 10 km/h
20:00 PM
7° / 16°
7° / 16°
Clear Sky
53% 12 km/h
21:00 PM
8° / 16°
8° / 16°
Clear Sky
61% 8 km/h
22:00 PM
8° / 15°
8° / 15°
Clear Sky
63% 6 km/h
23:00 PM
7° / 15°
7° / 15°
Clear Sky
61% 10 km/h
00:00 AM
7° / 14°
7° / 14°
Clear Sky
63% 8 km/h
01:00 AM
8° / 13°
8° / 13°
Clear Sky
70% 5 km/h
02:00 AM
8° / 13°
8° / 13°
Clear Sky
72% 4 km/h
03:00 AM
8° / 12°
8° / 12°
Clear Sky
76% 3 km/h
04:00 AM
7° / 12°
7° / 12°
Clear Sky
73% 4 km/h
05:00 AM
7° / 12°
7° / 12°
Clear Sky
72% 6 km/h

30 Day Averages and Extremes

  • Average high 19.3°C
  • Average low 12.6°C
  • Hottest day 26°C (01 October 2026)
  • Coldest day 0°C (03 October 2026)
  • Average humidity 65.5%
  • Days with precipitation 21 days
  • Highest precipitation 63 mm (07 September 2026)

Yesterday's Data

  • Max: 20°C
  • Min: 15°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 18ºC to 21ºC (64.4ºF to 69.8ºF), you might consider wearing:
- Shorts or lightweight trousers
- Sunscreen (if spending time outdoors)
- Cotton or linen fabrics
- Comfortable sandals or sneakers

Temperature

Early
13°C / 17°C
Morning
10°C / 17°C
Afternoon
6°C / 20°C
Evening
8°C / 16°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 454
  • CO 229
  • NH3 2
  • NO2 25
  • O3 50
  • PM10 11
  • PM25 6
  • SO2 1
  • CH4 1,408

Sunrise / Sunset

05:45
18:01