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Weather in Grimsby for September 2026

Your guide to Grimsby weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Grimsby has been nearly identical to the historical average, with a temperature of 20.1 °C (showing only a slight deviation of 0.1 °C).

  • The forecast for the next days in Grimsby predicts temperatures to be around 21 °C, close to the historical average.

  • In general, the average temperature in Grimsby at the beginning of September is 21.3 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 21.4 °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
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light rain shower
20°
2
Cloudy
21°
3
Overcast
23°
4
Sunny
20°
5
Patchy rain possible
20°
6
Overcast
23°
7
Partly cloudy
22°
8
Partly cloudy
22°
9
Sunny
21°
10
Patchy rain possible
21°
11
Light rain shower
19°
12
Overcast
17°
13
Overcast
17°
14
Overcast
19°
15
Patchy rain possible
20°
16
Cloudy
18°
17
Light drizzle
18°
18
Light rain shower
19°
19
Partly cloudy
20°
20
Sunny
19°
21
Overcast
20°
22
Sunny
24°
23
Sunny
20°
24
Sunny
18°
25
Sunny
19°
26
Sunny
25°
27
Overcast
19°
28
Overcast
24°
29
Overcast
20°
30
Overcast
25°

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° /12° 1.4 mm 4
2 Sept. Cloudy
Cloudy
 21° /13° 2 mm 4
3 Sept. Overcast
Overcast
 23° /13° 3.6 mm 4
4 Sept. Sunny
Sunny
 20° /13° 1.9 mm 4
5 Sept. Patchy rain possible
Patchy rain possible
 20° /12° 0.1 mm 5
6 Sept. Overcast
Overcast
 23° /13° 0.2 mm 5
7 Sept. Partly cloudy
Partly cloudy
 22° /15° 0.1 mm 4
8 Sept. Partly cloudy
Partly cloudy
 22° /13° 0.9 mm 5
9 Sept. Sunny
Sunny
 21° /12° 0.2 mm 5
10 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 2.1 mm 4
11 Sept. Light rain shower
Light rain shower
 19° /11° 1 mm 4
12 Sept. Overcast
Overcast
 17° /9° 2.2 mm 3
13 Sept. Overcast
Overcast
 17° /10° 0.4 mm 3
14 Sept. Overcast
Overcast
 19° /10° 3.5 mm 4
15 Sept. Patchy rain possible
Patchy rain possible
 20° /12° 0.7 mm 4
16 Sept. Cloudy
Cloudy
 18° /11° 0.3 mm 4
17 Sept. Light drizzle
Light drizzle
 18° /11° 2.3 mm 4
18 Sept. Light rain shower
Light rain shower
 19° /11° 1.8 mm 4
19 Sept. Partly cloudy
Partly cloudy
 20° /13° 0.5 mm 5
20 Sept. Sunny
Sunny
 19° /12° 0 mm 3.2
21 Sept. Overcast
Overcast
 20° /10° 0 mm 1.4
22 Sept. Sunny
Sunny
 24° /14° 0 mm 3.3
23 Sept. Sunny
Sunny
 20° /11° 2.5 mm 2.8
24 Sept. Sunny
Sunny
 18° /8° 0 mm 4
25 Sept. Sunny
Sunny
 19° /9° 0 mm 5
26 Sept. Sunny
Sunny
 25° /11° 0 mm 7
27 Sept. Overcast
Overcast
 19° /14° 0 mm 5
28 Sept. Overcast
Overcast
 24° /14° 0 mm 6
29 Sept. Overcast
Overcast
 20° /14° 0 mm 6
30 Sept. Overcast
Overcast
 25° /15° 0 mm 6
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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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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