Live Weather & Forecast
Weather in Harmondsworth
Middlesex, United Kingdom · Real-time conditions & 3-day outlook
15°C
Feels like 14°C
59°F / Feels 58°F
Patchy rain nearby
Harmondsworth, Middlesex
🌞 Daytime
Updated: 2026-04-18 19:45
Humidity
39%
Wind
13.7 km/h NW
Wind Gust
19.4 km/h
Pressure
1022 mb
Visibility
10 km
UV Index
0.1
(Low)
Precipitation
0.03 mm
Cloud Cover
0%
Dew Point
5.6°C
Wind Degree
321°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
172.9 μg/m³
NO₂
8.4 μg/m³
O₃
85 μg/m³
SO₂
1.3 μg/m³
PM 2.5
3.7 μg/m³
PM 10
7.1 μg/m³
Today's Hourly Forecast
24-hour breakdown for Harmondsworth, Middlesex
12 AM
12°
Overcast
1 AM
11°
Patchy rain nearby
2 AM
11°
Patchy rain nearby
3 AM
10°
Partly Cloudy
4 AM
9°
Clear
5 AM
8°
Clear
6 AM
7°
Clear
7 AM
7°
Sunny
8 AM
9°
Sunny
9 AM
10°
Partly Cloudy
10 AM
11°
Partly Cloudy
11 AM
12°
Partly Cloudy
12 PM
12°
Patchy rain nearby
1 PM
12°
Patchy rain nearby
2 PM
12°
Patchy rain nearby
3 PM
12°
Cloudy
4 PM
16°
Overcast
5 PM
14°
Patchy rain nearby
6 PM
13°
Patchy rain nearby
7 PM
15°
Patchy rain nearby
8 PM
11°
Patchy rain nearby
9 PM
10°
Partly Cloudy
10 PM
9°
Partly Cloudy
11 PM
9°
Partly Cloudy
3-Day Forecast
Daily overview for Harmondsworth, Middlesex
Today
Patchy rain nearby
16°
/
7°
🌧️ 86% chance of rain
💧 Avg. humidity: 72%
💨 Max wind: 18 km/h
🌧️ Total precip: 0.23 mm
☀️ UV Index: 4.2
🌅 Sunrise: 06:00 AM
🌇 Sunset: 08:03 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Sun, Apr 19
Sunny
14°
/
4°
🌧️ 0% chance of rain
💧 Avg. humidity: 61%
💨 Max wind: 15.5 km/h
🌧️ Total precip: 0.02 mm
☀️ UV Index: 4.3
🌅 Sunrise: 05:58 AM
🌇 Sunset: 08:05 PM
🌙 Waxing Crescent
🌑 Moon: 3% lit
Mon, Apr 20
Partly Cloudy
13°
/
5°
🌧️ 0% chance of rain
💧 Avg. humidity: 60%
💨 Max wind: 20.2 km/h
🌧️ Total precip: 0.08 mm
☀️ UV Index: 4.3
🌅 Sunrise: 05:56 AM
🌇 Sunset: 08:07 PM
🌙 Waxing Crescent
🌑 Moon: 9% lit
Best Time to Visit Harmondsworth
Plan your trip to Harmondsworth, United Kingdom around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Harmondsworth?
Current conditions in Harmondsworth: Patchy rain nearby, temperature 15°C, humidity 39%.
What is the best time to visit Harmondsworth?
The best time to visit Harmondsworth is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Harmondsworth?
Harmondsworth is located at approximately 51.5° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Harmondsworth?
The wettest period in Harmondsworth is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Harmondsworth?
For visits to Harmondsworth during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Harmondsworth in?
Harmondsworth is located in United Kingdom, in the state of Middlesex.
What are the public holidays in Harmondsworth in 2026?
View the 2026 public holidays for Harmondsworth on our Holidays page.
What are the GPS coordinates used for the weather forecast in Harmondsworth?
The weather forecast for Harmondsworth uses coordinates 51.4889, -0.4755.