As of 20:35 BST

Weather in Merton

+21°Weather now

Merton, Saturday, 8 August, 20:35

Overcast. Feels like 20°C. High 25°C, low 10°C.

Pressure1016 mb
Wind2 mph N
Humidity58%
Visibility6.2 mi
Dew point12°C
Sun, 09+13 ° /25 °0Clear sky
+25 °Clear sky

Merton, Sunday, 9 August

Clear sky. High 25°C, low 13°C.

Pressure1015 mb
Wind10 mph NW
Humidity37%
Visibility6.2 mi
Dew point8°C
Mon, 10+13 ° /25 °0Overcast
+25 °Overcast

Merton, Monday, 10 August

Overcast. High 25°C, low 13°C.

Pressure1021 mb
Wind10 mph NW
Humidity44%
Visibility6.2 mi
Dew point9°C
Tue, 11+13 ° /28 °0Clear sky
+28 °Clear sky

Merton, Tuesday, 11 August

Clear sky. High 28°C, low 13°C.

Pressure1023 mb
Wind16 mph SE
Humidity33%
Visibility6.2 mi
Dew point8°C
Wed, 12+14 ° /34 °0Partly cloudy
+34 °Partly cloudy

Merton, Wednesday, 12 August

Partly cloudy. High 34°C, low 14°C.

Pressure1020 mb
Wind8 mph SE
Humidity20%
Visibility6.2 mi
Dew point8°C
Thu, 13+17 ° /33 °0Mainly clear
+33 °Mainly clear

Merton, Thursday, 13 August

Mainly clear. High 33°C, low 17°C.

Pressure1017 mb
Wind13 mph NW
Humidity19%
Visibility—
Dew point5°C
Fri, 14+16 ° /24 °0Overcast
+24 °Overcast

Merton, Friday, 14 August

Overcast. High 24°C, low 16°C.

Pressure1019 mb
Wind14 mph W
Humidity64%
Visibility—
Dew point15°C
Sat, 15+15 ° /23 °0.3Light rain
+23 °Light rain

Merton, Saturday, 15 August

Light rain. High 23°C, low 15°C.

Pressure1017 mb
Wind13 mph NW
Humidity56%
Visibility—
Dew point13°C
Sun, 16+13 ° /22 °0.2Light rain
+22 °Light rain

Merton, Sunday, 16 August

Light rain. High 22°C, low 13°C.

Pressure1019 mb
Wind14 mph NW
Humidity66%
Visibility—
Dew point13°C
Mon, 17+14 ° /18 °4.7Light rain
+18 °Light rain

Merton, Monday, 17 August

Light rain. High 18°C, low 14°C.

Pressure1014 mb
Wind15 mph SW
Humidity97%
Visibility—
Dew point16°C
Tue, 18+13 ° /19 °0Mainly clear
+19 °Mainly clear

Merton, Tuesday, 18 August

Mainly clear. High 19°C, low 13°C.

Pressure1016 mb
Wind14 mph NW
Humidity65%
Visibility—
Dew point11°C
Wed, 19+12 ° /19 °0Overcast
+19 °Overcast

Merton, Wednesday, 19 August

Overcast. High 19°C, low 12°C.

Pressure1017 mb
Wind13 mph NW
Humidity45%
Visibility—
Dew point6°C
Thu, 20+12 ° /19 °0Mainly clear
+19 °Mainly clear

Merton, Thursday, 20 August

Mainly clear. High 19°C, low 12°C.

Pressure1015 mb
Wind12 mph NW
Humidity49%
Visibility—
Dew point7°C
Fri, 21+10 ° /20 °0Overcast
+20 °Overcast

Merton, Friday, 21 August

Overcast. High 20°C, low 10°C.

Pressure1014 mb
Wind14 mph NW
Humidity48%
Visibility—
Dew point8°C
Sat, 22+10 ° /22 °1.1Light rain
+22 °Light rain

Merton, Saturday, 22 August

Light rain. High 22°C, low 10°C.

Pressure1019 mb
Wind20 mph NW
Humidity40%
Visibility—
Dew point6°C
Sun, 23+11 ° /17 °0.1Light rain
+17 °Light rain

Merton, Sunday, 23 August

Light rain. High 17°C, low 11°C.

Pressure1025 mb
Wind16 mph NW
Humidity64%
Visibility—
Dew point9°C

Questions about the month ahead

How accurate is a month-long forecast?

The first 16 days come from weather models — highly reliable for the first 3–5 days, gradually less so after that. Days 17 to 30 for Merton are built from climate averages over the last 60 years, so they show typical weather for those dates rather than a specific forecast.

What does "above average" mean?

We compare the forecast with the climate average for exactly the same calendar days, calculated from 60 years of observations. The difference shows how the coming month compares with a typical one.

Where do the 66-year records come from?

These are real historical extremes recorded in Merton since 1960: the highest and lowest temperature for each calendar date, with the year it happened.

How often is the 30-day forecast updated?

The forecast portion refreshes every hour. The climate portion is based on long-term data and stays stable.