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Aberystwyth in September 2026: weather, temperatures and activities

Do you want to visit Aberystwyth in September 2026? Discover the usual weather at this time of year, average temperatures, the risk of rain, possible activities, and our opinion on whether September is a good month to travel to Aberystwyth, Wales.

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Is it worth visiting Aberystwyth in September?

Check your ideal travel criteria and see if the month of September suits your plans to go to Aberystwyth.
What matters most?
Aberystwyth in September 2026: weather, temperatures and activities

Page summary

Aberystwyth in September in summary
Favourable weather
Min 11°C Max 16°C 72 mm 4 day(s) 91% 52% 16°C 10.4 h/day
Best activities in September
Beach and swimmingHiking and trekkingCultural visits and heritageNature and landscapesGastronomyBoat trip and cruise
Practical guidelines
High crowding 05:51 18:31
Hourly weather

Average weather in Aberystwyth in September 2026

Favourable weather

The weather in Aberystwyth in September 2026 is based on statistical data from previous years in September. This allows you to forecast the weather in September 2026. Check the hourly statistics (6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 and 3:00), with the associated average temperature, for the whole month, and also, by navigating the tabs, for the beginning, middle and end of the month.

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Climate

Climate of Aberystwyth in September

Temperatures, precipitation and monthly trends help to better understand the climate in Aberystwyth in September.

Temperatures and rain in Aberystwyth in September

Average daily weather

Temperatures and rain day by day in September.
Minimal Average Maximums Average rainfall

Monthly temperatures

The month of September is highlighted to compare it quickly with the rest of the year.
Minimal Average Maximums

Monthly precipitation

The bar for the month under study is highlighted.
Average rainfall

About the climate in Aberystwyth in September

Seasonal normals

Seasonal normals of Aberystwyth in September

Check the seasonal normals in Aberystwyth in September and compare the weather with the previous month and the following month (or the months of your choice by selecting months in the form below): temperatures, wind, rain, humidity, climate rating...

Last updated: 12/01/2026
Reference period for normals: January 2009 - December 2025
Month analyzed
September
Weather data August September October
Outside temperature
Average temperature 15.3°C 13.7°C 11.7°C
Maximum temperature 17.3°C 16.0°C 13.5°C
Minimum temperature 13.3°C 11.4°C 9.9°C
Record maximum temperature 24.0°C
(2020)
24.0°C
(2016)
20.0°C
(2011)
Record low temperature 7.0°C
(2020)
5.0°C
(2010)
1.0°C
(2018)
Number of days at +30° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Number of days at +18° 12 day(s)
(39%)
7 day(s)
(23%)
1 day(s)
(3%)
Number of days below 0° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Sea temperature
Sea temperature (average) 15.7°C 15.7°C 14.8°C
Sea temperature (minimum) 15.2°C 15.0°C 13.6°C
Sea temperature (maximum) 16.4°C 16.4°C 15.7°C
Wind
Wind speed 21 km/h 21 km/h 24 km/h
Wind temperature 12.3°C 9.9°C 7.7°C
Precipitation (rain)
Precipitation 85.6 mm 72.4 mm 92.8 mm
Number of days with precipitation 21 day(s)
(68%)
17 day(s)
(57%)
19 day(s)
(61%)
Number of days with significant precipitation (greater than 5 mm) 6 day(s)
(18%)
4 day(s)
(14%)
7 day(s)
(22%)
Record precipitation in one day 30.1 mm
(2016)
31.3 mm
(2018)
32.3 mm
(2019)
Other weather data
Humidity 92% 91% 90%
Visibility 9.0 km 9.1 km 9.1 km
Cloud cover 55% 52% 58%
UV index 4 4 3
Daily sunshine 12h 10h 6h
Sunrise and sunset
Sunrise time 04h59 05h51 06h42
Sunset time 19h41 18h31 17h22
Day length 14h42 12h40 10h40
Our opinion on the climate in September
The review of Where And When fair weather favourable weather fair weather
Activities and events

What to do in Aberystwyth in September?

Best activities in September
Beach and swimmingHiking and trekkingCultural visits and heritageNature and landscapesGastronomyBoat trip and cruise
Observed weather

What was the weather like in Aberystwyth in September last?

Find the observed weather calendar in Aberystwyth in September 2025, with each day’s weather, temperatures and precipitation.

Mon. Tue. Wed. Thu. Fri. Sat. Sun.
1
Light rain shower
14°C16°C5.2 mm
2
Patchy rain nearby
11°C18°C0.4 mm
3
Light rain shower
16°C17°C3.8 mm
4
Light rain shower
11°C16°C1.5 mm
5
Patchy rain nearby
13°C16°C0.1 mm
6
Clear/Sunny
12°C21°C0.0 mm
7
Light rain
15°C20°C2.6 mm
8
Patchy light drizzle
10°C16°C2.5 mm
9
Partly Cloudy
11°C17°C0.1 mm
10
Light drizzle
14°C15°C2.7 mm
11
Light rain shower
12°C14°C4.4 mm
12
Patchy rain nearby
11°C14°C3.7 mm
13
Light rain shower
10°C14°C6.5 mm
14
Light drizzle
10°C16°C13.2 mm
15
Light rain shower
13°C14°C3.5 mm
16
Light rain shower
13°C14°C1.0 mm
17
Patchy rain nearby
16°C17°C6.3 mm
18
Patchy rain nearby
13°C17°C1.2 mm
19
Partly Cloudy
16°C19°C0.1 mm
20
Light rain
13°C15°C6.8 mm
21
Partly Cloudy
9°C13°C0.6 mm
22
Clear/Sunny
5°C12°C0.0 mm
23
Partly Cloudy
7°C13°C0.0 mm
24
Partly Cloudy
7°C15°C0.0 mm
25
Clear/Sunny
8°C16°C0.0 mm
26
Clear/Sunny
6°C15°C0.0 mm
27
Patchy rain nearby
10°C13°C1.1 mm
28
Clear/Sunny
8°C14°C0.0 mm
29
Partly Cloudy
8°C14°C0.0 mm
30
Partly Cloudy
9°C16°C0.0 mm
Nearby

Where to go near Aberystwyth in September?

Compare cities and destinations near Aberystwyth in September to find another travel stop, a nearby alternative or a logical continuation of your stay in Aberystwyth.

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Every month

Best time to visit Aberystwyth month by month

Compare the weather in Aberystwyth across all months of the year and open each detailed page to find the best time.

Frequently asked questions

Travel to to Aberystwyth in September: your frequently asked questions

Short answers to the questions we ask ourselves before booking for this month.

Yes, it’s a good time. Conditions are favorable in Aberystwyth in September, which places this month 3th out of 12.

Expect an average of 16°C during the day and 11°C at night, with about 72 mm of precipitation spread over 4 rainy days.

The sea is only 16°C on average in September. Swimming is still possible, but it will be cool.

Expect about 10.4 hours of sunshine per day on average for this month.

This month is particularly suited to these activities: Beach and swimming, Hiking and trekking, Cultural visits and heritage and Nature and landscapes. These are the ones for which the conditions on site are most favourable.

Visitor numbers are moderate: this month is in High crowding, with an index of 57/100. It is often a good compromise between weather and tranquility.

The most favorable months in Aberystwyth are: June, July and September. You are therefore already in one of the best times of the year; shifting your plans would not gain you much in terms of weather.
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Temperatures are shown in degrees Celsius and precipitation in millimetres. Based on your country of connection, °F and inches may be more familiar to you.