Annual mean 12°C · wettest around January · prevailing wind SW
Warmest
24.9 °C
Coldest
6.5 °C
Wettest
29%
Windiest
3.7 m/s
Prevailing
SW
3.1 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 12°C. July is the hottest month, with highs of about 25°C; February is the coldest, with lows of about 4°C. The rainy (wet) season in Monmouth runs from October to April, peaking in January with a 31% chance of rain on a given day. The dry season is May to September; July is the driest month, at 9%. Winds in Monmouth are highest in January, averaging 2.7 m/s (10 km/h), and lightest in September, at 2.2 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Monmouth come in July, when the sky is typically 24% covered; December is the cloudiest month, at 73%.
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
7°C
4°C
4°C
31%
71%
2.7 m/s
1
0
28
February
8°C
4°C
4°C
28%
70%
2.7 m/s
0
0
30
March
10°C
4°C
7°C
27%
61%
2.7 m/s
6
0
49
April
14°C
7°C
10°C
23%
56%
2.7 m/s
21
1
72
May
17°C
10°C
15°C
16%
50%
2.4 m/s
51
7
82
June
21°C
13°C
19°C
14%
41%
2.6 m/s
71
17
73
July
25°C
15°C
23°C
9%
24%
2.7 m/s
79
39
53
August
25°C
14°C
24°C
10%
26%
2.4 m/s
77
42
48
September
21°C
12°C
19°C
15%
41%
2.2 m/s
81
17
74
October
16°C
8°C
13°C
22%
50%
2.2 m/s
40
2
82
November
10°C
6°C
7°C
29%
68%
2.4 m/s
5
0
51
December
7°C
4°C
4°C
30%
73%
2.5 m/s
0
0
25
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 7°C at their warmest in December, its coolest month, and 25°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 12°C around the clock. Rain is most likely around January 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 4°CRain 30%
Winter in Monmouth has typical daily highs of about 7°C and lows of about 4°C, with a 30% chance of rain on a given day.
Monmouth weather in springMarch to May
High 14°CLow 7°CRain 22%
Spring in Monmouth has typical daily highs of about 14°C and lows of about 7°C, with a 22% chance of rain on a given day.
Monmouth weather in summerJune to August
High 24°CLow 14°CRain 11%
Summer in Monmouth has typical daily highs of about 24°C and lows of about 14°C, with a 11% chance of rain on a given day.
Monmouth weather in autumnSeptember to November
High 16°CLow 9°CRain 22%
Autumn in Monmouth has typical daily highs of about 16°C and lows of about 9°C, with a 22% chance of rain on a given day.
When is the rainy season in Monmouth?
The rainy (wet) season in Monmouth runs from October to April, peaking in January with a 31% chance of rain on a given day. The dry season is May to September; July is the driest month, at 9%.
What time of year is Monmouth windiest?
Winds in Monmouth are highest in January, averaging 2.7 m/s (10 km/h), and lightest in September, at 2.2 m/s (8 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 12°C. July is the hottest month, with highs of about 25°C; February is the coldest, with lows of about 4°C.