Annual mean 10°C · wettest around December · prevailing wind SW
Warmest
18.8 °C
Coldest
6.1 °C
Wettest
37%
Windiest
6.4 m/s
Prevailing
SW
5.0 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Aberystwyth over the whole year is 10°C. July is the hottest month, with highs of about 18°C; January is the coldest, with lows of about 5°C. The rainy (wet) season in Aberystwyth runs from September to March, peaking in December with a 36% chance of rain on a given day. The dry season is April to August; May is the driest month, at 16%. Winds in Aberystwyth are highest in February, averaging 5.3 m/s (19 km/h), and lightest in July, at 3.5 m/s (13 km/h). The prevailing wind is from the SW. The clearest skies in Aberystwyth come in May, when the sky is typically 61% covered; December is the cloudiest month, at 77%.
Month by month Aberystwyth climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
6°C
5°C
2°C
28%
74%
4.6 m/s
0
0
13
February
8°C
5°C
2°C
29%
71%
5.3 m/s
1
0
18
March
9°C
5°C
4°C
26%
71%
4.6 m/s
2
0
30
April
11°C
6°C
7°C
18%
65%
3.9 m/s
7
0
51
May
15°C
9°C
11°C
16%
61%
3.6 m/s
25
0
76
June
17°C
12°C
14°C
19%
68%
3.7 m/s
44
3
78
July
18°C
14°C
16°C
19%
69%
3.5 m/s
59
6
79
August
18°C
13°C
16°C
21%
68%
3.8 m/s
58
4
80
September
16°C
12°C
14°C
27%
68%
3.7 m/s
42
3
76
October
13°C
10°C
10°C
27%
70%
4.2 m/s
11
0
67
November
10°C
7°C
5°C
30%
73%
4.4 m/s
1
0
39
December
8°C
6°C
3°C
36%
77%
4.8 m/s
0
0
22
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Aberystwyth weather by season
Year round, Aberystwyth has days of about 6°C at their warmest in January, its coolest month, and 18°C in July, its warmest; the coolest hours of the day run from 5°C to 14°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around December and least likely around May. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Aberystwyth weather in winterDecember to February
High 7°CLow 5°CRain 31%
Winter in Aberystwyth has typical daily highs of about 7°C and lows of about 5°C, with a 31% chance of rain on a given day.
Aberystwyth weather in springMarch to May
High 12°CLow 7°CRain 20%
Spring in Aberystwyth has typical daily highs of about 12°C and lows of about 7°C, with a 20% chance of rain on a given day.
Aberystwyth weather in summerJune to August
High 18°CLow 13°CRain 20%
Summer in Aberystwyth has typical daily highs of about 18°C and lows of about 13°C, with a 20% chance of rain on a given day.
Aberystwyth weather in autumnSeptember to November
High 13°CLow 10°CRain 28%
Autumn in Aberystwyth has typical daily highs of about 13°C and lows of about 10°C, with a 28% chance of rain on a given day.
When is the rainy season in Aberystwyth?
The rainy (wet) season in Aberystwyth runs from September to March, peaking in December with a 36% chance of rain on a given day. The dry season is April to August; May is the driest month, at 16%.
What time of year is Aberystwyth windiest?
Winds in Aberystwyth are highest in February, averaging 5.3 m/s (19 km/h), and lightest in July, at 3.5 m/s (13 km/h). The prevailing wind is from the SW.
What is the average temperature in Aberystwyth year round?
The average temperature in Aberystwyth over the whole year is 10°C. July is the hottest month, with highs of about 18°C; January is the coldest, with lows of about 5°C.