Annual mean 13°C · wettest around December · prevailing wind W
Warmest
29.2 °C
Coldest
2.5 °C
Wettest
40%
Windiest
4.1 m/s
Prevailing
W
3.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Lower Gwynedd over the whole year is 13°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -1°C. Lower Gwynedd has no sharply defined rainy season: the chance of rain on a given day runs from 35% in October, the driest month, to 41% in December, the wettest. Winds in Lower Gwynedd are highest in March, averaging 2.9 m/s (10 km/h), and lightest in July, at 1.7 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Lower Gwynedd come in July, when the sky is typically 36% covered; May is the cloudiest month, at 52%.
Month by month Lower Gwynedd 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
3°C
-1°C
-3°C
38%
50%
2.6 m/s
1
0
9
February
5°C
1°C
0°C
40%
46%
2.5 m/s
3
0
19
March
9°C
3°C
4°C
38%
46%
2.9 m/s
9
0
35
April
15°C
8°C
11°C
38%
49%
2.8 m/s
31
3
61
May
20°C
13°C
18°C
40%
52%
2.2 m/s
60
17
64
June
26°C
19°C
25°C
37%
39%
2.1 m/s
61
45
35
July
29°C
22°C
30°C
38%
36%
1.7 m/s
25
63
6
August
27°C
20°C
28°C
36%
39%
1.7 m/s
41
61
15
September
24°C
16°C
23°C
37%
42%
1.8 m/s
67
37
44
October
18°C
11°C
16°C
35%
45%
1.9 m/s
55
10
72
November
11°C
4°C
7°C
37%
38%
2.2 m/s
14
0
45
December
5°C
1°C
1°C
41%
49%
2.3 m/s
1
0
16
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 Lower Gwynedd weather by season
Year round, Lower Gwynedd has days of about 3°C at their warmest in January, its coolest month, and 29°C in July, its warmest; the coolest hours of the day run from -1°C to 22°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around December and least likely around October. 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.
Lower Gwynedd weather in winterDecember to February
High 4°CLow 0°CRain 40%
Winter in Lower Gwynedd has typical daily highs of about 4°C and lows of about 0°C, with a 40% chance of rain on a given day.
Lower Gwynedd weather in springMarch to May
High 15°CLow 8°CRain 39%
Spring in Lower Gwynedd has typical daily highs of about 15°C and lows of about 8°C, with a 39% chance of rain on a given day.
Lower Gwynedd weather in summerJune to August
High 27°CLow 20°CRain 37%
Summer in Lower Gwynedd has typical daily highs of about 27°C and lows of about 20°C, with a 37% chance of rain on a given day.
Lower Gwynedd weather in autumnSeptember to November
High 18°CLow 11°CRain 36%
Autumn in Lower Gwynedd has typical daily highs of about 18°C and lows of about 11°C, with a 36% chance of rain on a given day.
When is the rainy season in Lower Gwynedd?
Lower Gwynedd has no sharply defined rainy season: the chance of rain on a given day runs from 35% in October, the driest month, to 41% in December, the wettest.
What time of year is Lower Gwynedd windiest?
Winds in Lower Gwynedd are highest in March, averaging 2.9 m/s (10 km/h), and lightest in July, at 1.7 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Lower Gwynedd year round?
The average temperature in Lower Gwynedd over the whole year is 13°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -1°C.