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Monmouth weather by month
Check out Monmouth weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Monmouth (°C)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 7 |
7 |
9 |
12 |
16 |
19 |
21 |
20 |
18 |
14 |
10 |
7 |
| Min temperature (night-time) | 1 |
1 |
2 |
4 |
7 |
10 |
11 |
11 |
9 |
7 |
4 |
2 |
| Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Monmouth
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 8 |
10 |
12 |
14 |
16 |
17 |
16 |
15 |
13 |
11 |
9 |
8 |
| UV Index (Maximum) | 1 |
1 |
2 |
4 |
5 |
6 |
6 |
5 |
4 |
2 |
1 |
0 |
Rainfall in Monmouth
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 18 |
14 |
17 |
15 |
15 |
13 |
12 |
14 |
14 |
16 |
17 |
18 |
| Average monthly rainfall (mm) | 96 |
71 |
72 |
58 |
65 |
58 |
48 |
68 |
78 |
82 |
85 |
98 |
More about Monmouth
Monmouth by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Wales
Expires at 23:59 on Friday 20th Mar 2026 · View all Travelodge offers
The climate guide for Wales (Monmouth) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Monmouth?
Monmouth has a temperate climate with warm summers and some rainfall in all months.
Monmouth weather in January
Expect daytime maximum temperatures of 7°C in Monmouth, Wales in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 18 days with some rainfall and typically 96 mm of rainfall in the month.
- 7°C max day temperature
7 - 2 hours of sunshine per day
- 18 days with some rainfall
18 - 1°C min night temperature
1 - 8 hours of daylight per day
8 - No heat & humidity
0 - 96 mm of monthly rainfall
96 - 1 (Low) UV index
1
Monmouth weather in February
Expect daytime maximum temperatures of 7°C in Monmouth, Wales in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 14 days with some rainfall and typically 71 mm of rainfall in the month.
- 7°C max day temperature
7 - 2 hours of sunshine per day
- 14 days with some rainfall
14 - 1°C min night temperature
1 - 10 hours of daylight per day
10 - No heat & humidity
0 - 71 mm of monthly rainfall
71 - 1 (Low) UV index
1
Monmouth weather in March
Expect daytime maximum temperatures of 9°C in Monmouth, Wales in March based on long-term weather averages. There are 4 hours of sunshine per day on average with 17 days with some rainfall and typically 72 mm of rainfall in the month.
- 9°C max day temperature
9 - 4 hours of sunshine per day
- 17 days with some rainfall
17 - 2°C min night temperature
2 - 12 hours of daylight per day
12 - No heat & humidity
0 - 72 mm of monthly rainfall
72 - 2 (Low) UV index
2
Monmouth weather in April
Expect daytime maximum temperatures of 12°C in Monmouth, Wales in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 58 mm of rainfall in the month.
- 12°C max day temperature
12 - 5 hours of sunshine per day
- 15 days with some rainfall
15 - 4°C min night temperature
4 - 14 hours of daylight per day
14 - No heat & humidity
0 - 58 mm of monthly rainfall
58 - 4 (Moderate) UV index
4
Monmouth weather in May
Expect daytime maximum temperatures of 16°C in Monmouth, Wales in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 15 days with some rainfall and typically 65 mm of rainfall in the month.
- 16°C max day temperature
16 - 6 hours of sunshine per day
- 15 days with some rainfall
15 - 7°C min night temperature
7 - 16 hours of daylight per day
16 - No heat & humidity
0 - 65 mm of monthly rainfall
65 - 5 (Moderate) UV index
5
Monmouth weather in June
Expect daytime maximum temperatures of 19°C in Monmouth, Wales in June based on long-term weather averages. There are 7 hours of sunshine per day on average with 13 days with some rainfall and typically 58 mm of rainfall in the month.
- 19°C max day temperature
19 - 7 hours of sunshine per day
- 13 days with some rainfall
13 - 10°C min night temperature
10 - 17 hours of daylight per day
17 - No heat & humidity
0 - 58 mm of monthly rainfall
58 - 6 (High) UV index
6
Monmouth weather in July
Expect daytime maximum temperatures of 21°C in Monmouth, Wales in July based on long-term weather averages. There are 6 hours of sunshine per day on average with 12 days with some rainfall and typically 48 mm of rainfall in the month.
- 21°C max day temperature
21 - 6 hours of sunshine per day
- 12 days with some rainfall
12 - 11°C min night temperature
11 - 16 hours of daylight per day
16 - No heat & humidity
0 - 48 mm of monthly rainfall
48 - 6 (High) UV index
6
Monmouth weather in August
Expect daytime maximum temperatures of 20°C in Monmouth, Wales in August based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 68 mm of rainfall in the month.
- 20°C max day temperature
20 - 6 hours of sunshine per day
- 14 days with some rainfall
14 - 11°C min night temperature
11 - 15 hours of daylight per day
15 - No heat & humidity
0 - 68 mm of monthly rainfall
68 - 5 (Moderate) UV index
5
Monmouth weather in September
Expect daytime maximum temperatures of 18°C in Monmouth, Wales in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 14 days with some rainfall and typically 78 mm of rainfall in the month.
- 18°C max day temperature
18 - 4 hours of sunshine per day
- 14 days with some rainfall
14 - 9°C min night temperature
9 - 13 hours of daylight per day
13 - No heat & humidity
0 - 78 mm of monthly rainfall
78 - 4 (Moderate) UV index
4
Monmouth weather in October
Expect daytime maximum temperatures of 14°C in Monmouth, Wales in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 16 days with some rainfall and typically 82 mm of rainfall in the month.
- 14°C max day temperature
14 - 3 hours of sunshine per day
- 16 days with some rainfall
16 - 7°C min night temperature
7 - 11 hours of daylight per day
11 - No heat & humidity
0 - 82 mm of monthly rainfall
82 - 2 (Low) UV index
2
Monmouth weather in November
Expect daytime maximum temperatures of 10°C in Monmouth, Wales in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 17 days with some rainfall and typically 85 mm of rainfall in the month.
- 10°C max day temperature
10 - 2 hours of sunshine per day
- 17 days with some rainfall
17 - 4°C min night temperature
4 - 9 hours of daylight per day
9 - No heat & humidity
0 - 85 mm of monthly rainfall
85 - 1 (Low) UV index
1
Monmouth weather in December
Expect daytime maximum temperatures of 7°C in Monmouth, Wales in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 18 days with some rainfall and typically 98 mm of rainfall in the month.
- 7°C max day temperature
7 - 2 hours of sunshine per day
- 18 days with some rainfall
18 - 2°C min night temperature
2 - 8 hours of daylight per day
8 - No heat & humidity
0 - 98 mm of monthly rainfall
98 - No UV (Maximum) Index UV index
0
More about Monmouth
Monmouth by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Wales
- Book hotels in the UK for £35 or less (London from £49)
- Prices based on lowest saver room rates. T&Cs apply
- Travel before 20th March 2026 (inclusive)
Expires at 23:59 on Friday 20th Mar 2026 · View all Travelodge offers
The climate guide for Wales (Monmouth) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
Compare Monmouth weather with the UK
The weather chart below compares the average monthly maximum daytime temperature for Monmouth, Monmouthshire, Wales and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
More about Wales
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