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United Kingdom weather

Weather in Grimsby for September 2026

Your guide to Grimsby weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Grimsby at the beginning of September is 21.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.3 °C by the end of September.

    • Rain 🌧️

  • Grimsby in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 56 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/11°
Temperatures
Average wind speed
25 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Grimsby Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
20°
2
Cloudy
22°
3
Overcast
22°
4
Sunny
20°
5
Patchy rain possible
20°
6
Mist
22°
7
Partly cloudy
22°
8
Partly cloudy
23°
9
Sunny
22°
10
Patchy rain possible
21°
11
Light rain shower
19°
12
Overcast
15°
13
Overcast
16°
14
Overcast
18°
15
Overcast
19°
16
Cloudy
17°
17
Light drizzle
18°
18
Light rain shower
19°
19
Partly cloudy
20°
20
Light rain
19°
21
Patchy rain possible
16°
22
Light rain shower
16°
23
Patchy rain possible
15°
24
Patchy rain possible
17°
25
Overcast
17°
26
Patchy rain possible
17°
27
Patchy rain possible
16°
28
Overcast
16°
29
Partly cloudy
16°
30
Light drizzle
15°

Temperatures trend during September in Grimsby

See the weather trend as well as the moving average line

September weather in Grimsby day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 20° /13° 1.9 mm 4
2 Sept. Cloudy
Cloudy
 22° /13° 2.6 mm 5
3 Sept. Overcast
Overcast
 22° /12° 4.7 mm 5
4 Sept. Sunny
Sunny
 20° /12° 1 mm 5
5 Sept. Patchy rain possible
Patchy rain possible
 20° /12° 0.1 mm 5
6 Sept. Mist
Mist
 22° /14° 0 mm 5
7 Sept. Partly cloudy
Partly cloudy
 22° /15° 0.1 mm 5
8 Sept. Partly cloudy
Partly cloudy
 23° /13° 0.3 mm 6
9 Sept. Sunny
Sunny
 22° /13° 0.2 mm 6
10 Sept. Patchy rain possible
Patchy rain possible
 21° /13° 2.3 mm 5
11 Sept. Light rain shower
Light rain shower
 19° /10° 1.4 mm 4
12 Sept. Overcast
Overcast
 15° /8° 2.8 mm 4
13 Sept. Overcast
Overcast
 16° /9° 0.4 mm 4
14 Sept. Overcast
Overcast
 18° /9° 4.6 mm 4
15 Sept. Overcast
Overcast
 19° /11° 0.7 mm 4
16 Sept. Cloudy
Cloudy
 17° /11° 0.5 mm 4
17 Sept. Light drizzle
Light drizzle
 18° /11° 2.9 mm 4
18 Sept. Light rain shower
Light rain shower
 19° /12° 2 mm 5
19 Sept. Partly cloudy
Partly cloudy
 20° /13° 0.5 mm 5
20 Sept. Light rain
Light rain
 19° /12° 2.1 mm 4
21 Sept. Patchy rain possible
Patchy rain possible
 16° /10° 0.2 mm 4
22 Sept. Light rain shower
Light rain shower
 16° /9° 0.3 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 15° /9° 9.7 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 0.6 mm 4
25 Sept. Overcast
Overcast
 17° /11° 2 mm 4
26 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 3.2 mm 4
27 Sept. Patchy rain possible
Patchy rain possible
 16° /8° 0.9 mm 4
28 Sept. Overcast
Overcast
 16° /9° 1.1 mm 4
29 Sept. Partly cloudy
Partly cloudy
 16° /9° 0.5 mm 4
30 Sept. Light drizzle
Light drizzle
 15° /9° 6.2 mm 4
Next
Important Notice
Our weather forecast for Grimsby in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Grimsby forecast closer to your planned date for the most up-to-date weather information.
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Grimsby in September - FAQ

What are the expected maximum and minimum temperatures in Grimsby during September?

Enjoy moderate daytime temperatures of up to 18° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Grimsby during September?

Moderate rainfall is anticipated in Grimsby during September, with a total of 56 mm spread over approximately 16 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Grimsby during September?

The average wind speed in Grimsby during September is 25 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Grimsby

Explore the daily rainfall trends and prepare for Grimsbys September weather 💧
Typically, Grimsby has 16 rainy days in September with a total of 56 mm of rainfall.

UV exposure in Grimsby during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Grimsby?

Get accurate weather forecasts for Grimsby, located at latitude 53.565 and longitude -0.076. Stay updated with localized weather information tailored for Grimsby.

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