UTC Offset
UTC+01:00
Mountain Ash, United Kingdom Snapshot 2026
Where is Mountain Ash?
Mountain Ash, United Kingdom
- Continent
- Europe
- Country
- United Kingdom
- City
- Mountain Ash
- Population
- 11.2K
- Coordinates
- 51.68°, -3.38°
Mountain Ash is a city in United Kingdom with a population of approximately 11.2K. Average temperatures range from 3°C (37°F) in January to 20°C (68°F) in July. The best time to visit is May, June, July, August, September.
Time in Mountain Ash right now
Open full time & time zone page 19:21 21
Monday, June 15, 2026
IANA time zone
Europe/London
Daylight saving
DST in effect
GMT / BST
Next DST change
October 25
backward -1h
Live weather in Mountain Ash
Daylight in Mountain Ash today
View full sunrise & sunset page Sunrise
Sunset
Day length
16h 38m
Climate normals for Mountain Ash
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Poor April
Fair May best
Good June best
Good July best
Excellent August best
Excellent September best
Good October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 8°C / 3°C | 4°C / -1°C | 14days (104 mm) Wet | 3.9h Poor | 90% Very Muggy | 1.1 Low | Poor | View Details |
| February | 9°C / 3°C | 5°C / -1°C | 13days (107 mm) Wet | 5.2h Fair | 86% Very Muggy | 1.3 Low | Poor | View Details |
| March | 10°C / 4°C | 7°C / 0°C | 16days (106 mm) Wet | 7.1h Good | 84% Humid | 3.2 Moderate | Poor | View Details |
| April | 13°C / 5°C | 10°C / 2°C | 12days (73 mm) Wet | 9.5h Good | 78% Humid | 4.3 Moderate | Fair | View Details |
| May best | 16°C / 9°C | 15°C / 6°C | 13days (83 mm) Wet | 11h Excellent | 78% Humid | 5.5 High | Good | View Details |
| June best | 19°C / 12°C | 18°C / 10°C | 13days (84 mm) Wet | 11h Excellent | 79% Humid | 6 High | Good | View Details |
| July best | 20°C / 13°C | 20°C / 13°C | 14days (83 mm) Wet | 11.1h Excellent | 79% Humid | 5.4 High | Excellent | View Details |
| August best | 20°C / 13°C | 19°C / 12°C | 13days (90 mm) Wet | 10h Excellent | 81% Humid | 5 Moderate | Excellent | View Details |
| September best | 18°C / 12°C | 16°C / 10°C | 14days (114 mm) Wet | 7.6h Good | 84% Humid | 3.5 Moderate | Good | View Details |
| October | 14°C / 9°C | 12°C / 7°C | 16days (135 mm) Wet | 6h Fair | 87% Very Muggy | 2.3 Moderate | Fair | View Details |
| November | 11°C / 6°C | 8°C / 3°C | 14days (122 mm) Wet | 4.4h Fair | 89% Very Muggy | 1.2 Low | Poor | View Details |
| December | 9°C / 5°C | 6°C / 1°C | 16days (137 mm) Wet | 3.2h Poor | 91% Very Muggy | 0.8 Low | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 8°C / 3°C . Feb: 9°C / 3°C . Mar: 10°C / 4°C . Apr: 13°C / 5°C . May: 16°C / 9°C . Jun: 19°C / 12°C . Jul: 20°C / 13°C . Aug: 20°C / 13°C . Sep: 18°C / 12°C . Oct: 14°C / 9°C . Nov: 11°C / 6°C . Dec: 9°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 104 mm. Feb: 107 mm. Mar: 106 mm. Apr: 73 mm. May: 83 mm. Jun: 84 mm. Jul: 83 mm. Aug: 90 mm. Sep: 114 mm. Oct: 135 mm. Nov: 122 mm. Dec: 137 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 90%. Feb: 86%. Mar: 84%. Apr: 78%. May: 78%. Jun: 79%. Jul: 79%. Aug: 81%. Sep: 84%. Oct: 87%. Nov: 89%. Dec: 91%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 22 km/h . Feb: 24 km/h . Mar: 22 km/h . Apr: 19 km/h . May: 18 km/h . Jun: 18 km/h . Jul: 18 km/h . Aug: 19 km/h . Sep: 20 km/h . Oct: 21 km/h . Nov: 22 km/h . Dec: 23 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 1. Feb: UV 1. Mar: UV 3. Apr: UV 4. May: UV 6. Jun: UV 6. Jul: UV 5. Aug: UV 5. Sep: UV 4. Oct: UV 2. Nov: UV 1. Dec: UV 1.
Frequently Asked Questions
Mountain Ash has a population of approximately 11.2K.
The best months to visit Mountain Ash are May, June, July, August, September, when temperatures are pleasant and rainfall is lower.
Mountain Ash receives approximately 1238mm of rainfall annually across 168 rainy days.
Mountain Ash is located in United Kingdom, in the Europe region.