Harrow Weather in September

Harrow in September sees pleasant daytime temperatures of 20°C (68°F) and nighttime lows of 11°C (52°F). Moderate rainfall is typical, with around 55 mm (2.2 in) for the month.

Rainfall in Harrow in September

Expect around 12 days of rain based on historical data, with 55 mm (2.2 in) average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Harrow in September

September is a good time to be in Harrow. Days are perfect, reaching 20°C (68°F), with nights around 11°C (52°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Harrow in September

With about 155 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Wind Speed in Harrow in September

Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Harrow.

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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Harrow's climate page.

Harrow Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 40%  

Precipitation 55 mm (2.2 in)  

Rainy days 12 days  

Humidity 73% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 155 hours *  

Percentage Sunshine 40% *  

* Data from: London, the United Kingdom (13 KM, 8 Miles).

What to Wear in Harrow in September

For Harrow in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Harrow in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

10/10

Walking

10/10

Barbeque

7/10

Camping

8/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Harrow's climate page.

More climate data for Harrow

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Harrow climate overview or explore weather in the United Kingdom.