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Weather in Saint Peter Port for September 2026

Your guide to Saint Peter Port weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Saint Peter Port has been nearly identical to the historical average, with a temperature of 17.6 °C (showing only a slight deviation of 0.3 °C).

  • The forecast for the next days in Saint Peter Port predicts temperatures to be around 17 °C, close to the historical average.

  • In general, the average temperature in Saint Peter Port at the beginning of September is 18.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 17 °C by the end of September.

    • Rain 🌧️

  • The climate of Saint Peter Port in September is notably wet, with an average of 15 rainy days, and a total of 78.7 mm of precipitation.

Average dry days
15
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/15°
Temperatures
Average wind speed
35 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Saint Peter Port Weather September

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

Temperatures trend during September in Saint Peter Port

See the weather trend as well as the moving average line

September weather in Saint Peter Port 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
 17° /16° 5.8 mm 3
2 Sept. Partly cloudy
Partly cloudy
 18° /15° 3 mm 4
3 Sept. Sunny
Sunny
 19° /16° 1.3 mm 4
4 Sept. Patchy rain possible
Patchy rain possible
 18° /16° 1.2 mm 4
5 Sept. Sunny
Sunny
 18° /16° 0.4 mm 5
6 Sept. Patchy rain possible
Patchy rain possible
 20° /16° 0.4 mm 4
7 Sept. Light rain shower
Light rain shower
 19° /16° 4.1 mm 4
8 Sept. Partly cloudy
Partly cloudy
 18° /15° 9.9 mm 4
9 Sept. Patchy rain possible
Patchy rain possible
 18° /15° 1.6 mm 4
10 Sept. Light rain shower
Light rain shower
 18° /15° 1.9 mm 4
11 Sept. Partly cloudy
Partly cloudy
 17° /15° 1.8 mm 4
12 Sept. Cloudy
Cloudy
 17° /15° 2.2 mm 4
13 Sept. Overcast
Overcast
 16° /15° 1 mm 3
14 Sept. Partly cloudy
Partly cloudy
 18° /15° 0.4 mm 5
15 Sept. Sunny
Sunny
 18° /15° 0.3 mm 5
16 Sept. Patchy rain possible
Patchy rain possible
 18° /16° 0.7 mm 4
17 Sept. Patchy rain possible
Patchy rain possible
 17° /16° 1.5 mm 5
18 Sept. Patchy rain possible
Patchy rain possible
 17° /16° 0.3 mm 4
19 Sept. Overcast
Overcast
 17° /17° 0.2 mm 5
20 Sept. Overcast
Overcast
 18° /17° 0.2 mm 5
21 Sept. Sunny
Sunny
 18° /17° 0 mm 5
22 Sept. Sunny
Sunny
 19° /18° 0 mm 5
23 Sept. Sunny
Sunny
 19° /17° 0 mm 5
24 Sept. Overcast
Overcast
 19° /18° 0 mm 4
25 Sept. Sunny
Sunny
 18° /16° 0 mm 5
26 Sept. Sunny
Sunny
 17° /15° 0 mm 5
27 Sept. Overcast
Overcast
 16° /13° 0 mm 4
28 Sept. Overcast
Overcast
 16° /15° 0 mm 4
29 Sept. Sunny
Sunny
 16° /15° 0 mm 5
30 Sept. Patchy rain possible
Patchy rain possible
 17° /15° 3.3 mm 4
Next
Important Notice
Our weather forecast for Saint Peter Port 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 Saint Peter Port forecast closer to your planned date for the most up-to-date weather information.
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Saint Peter Port in September - FAQ

What are the expected maximum and minimum temperatures in Saint Peter Port during September?
During September, expect a variety of temperatures with highs around 17° and lows near 15°, suitable for diverse activities and preferences.

How much rainfall should be expected in Saint Peter Port during September?
Moderate rainfall is anticipated in Saint Peter Port during September, with a total of 78.7 mm spread over approximately 15 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Saint Peter Port during September?
The average wind speed in Saint Peter Port during September is 35 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Saint Peter Port

Explore the daily rainfall trends and prepare for Saint Peter Ports September weather 💧
Typically, Saint Peter Port has 15 rainy days in September with a total of 78.7 mm of rainfall.

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Location coordinates Where is Saint Peter Port?

Get accurate weather forecasts for Saint Peter Port, located at latitude 49.46 and longitude -2.535. Stay updated with localized weather information tailored for Saint Peter Port.

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