Annual mean 11°C · wettest around March · prevailing wind SW
Warmest
22.2 °C
Coldest
5.5 °C
Wettest
39%
Windiest
5.1 m/s
Prevailing
SW
4.1 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 Monmouth over the whole year is 11°C. July is the hottest month, with highs of about 21°C; January is the coldest, with lows of about 4°C. Monmouth has no sharply defined rainy season: the chance of rain on a given day runs from 17% in July, the driest month, to 29% in March, the wettest. Winds in Monmouth are highest in February, averaging 4.1 m/s (15 km/h), and lightest in November, at 2.8 m/s (10 km/h). The prevailing wind is from the SW. The clearest skies in Monmouth come in May, when the sky is typically 56% covered; December is the cloudiest month, at 72%.
Month by month Monmouth 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
4°C
3°C
21%
68%
3.2 m/s
0
0
19
February
8°C
5°C
3°C
27%
68%
4.1 m/s
0
0
22
March
9°C
5°C
5°C
29%
67%
3.6 m/s
2
0
37
April
12°C
6°C
8°C
20%
61%
3.5 m/s
9
0
61
May
16°C
10°C
13°C
24%
56%
3.2 m/s
37
0
83
June
19°C
13°C
16°C
22%
60%
3.2 m/s
61
7
80
July
21°C
15°C
19°C
17%
60%
3.1 m/s
76
13
73
August
20°C
14°C
18°C
25%
61%
3.1 m/s
73
6
79
September
18°C
12°C
15°C
25%
61%
3.0 m/s
52
3
81
October
14°C
10°C
12°C
26%
67%
3.1 m/s
19
0
81
November
10°C
6°C
6°C
24%
69%
2.8 m/s
2
0
47
December
8°C
6°C
4°C
26%
72%
3.4 m/s
0
0
30
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 Monmouth weather by season
Year round, Monmouth has days of about 6°C at their warmest in January, its coolest month, and 21°C in July, its warmest; the coolest hours of the day run from 4°C to 15°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around March and least likely around July. 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.
Monmouth weather in winterDecember to February
High 7°CLow 5°CRain 25%
Winter in Monmouth has typical daily highs of about 7°C and lows of about 5°C, with a 25% chance of rain on a given day.
Monmouth weather in springMarch to May
High 13°CLow 7°CRain 25%
Spring in Monmouth has typical daily highs of about 13°C and lows of about 7°C, with a 25% chance of rain on a given day.
Monmouth weather in summerJune to August
High 20°CLow 14°CRain 21%
Summer in Monmouth has typical daily highs of about 20°C and lows of about 14°C, with a 21% chance of rain on a given day.
Monmouth weather in autumnSeptember to November
High 14°CLow 9°CRain 25%
Autumn in Monmouth has typical daily highs of about 14°C and lows of about 9°C, with a 25% chance of rain on a given day.
When is the rainy season in Monmouth?
Monmouth has no sharply defined rainy season: the chance of rain on a given day runs from 17% in July, the driest month, to 29% in March, the wettest.
What time of year is Monmouth windiest?
Winds in Monmouth are highest in February, averaging 4.1 m/s (15 km/h), and lightest in November, at 2.8 m/s (10 km/h). The prevailing wind is from the SW.
What is the average temperature in Monmouth year round?
The average temperature in Monmouth over the whole year is 11°C. July is the hottest month, with highs of about 21°C; January is the coldest, with lows of about 4°C.