UTC Offset
UTC+01:00
Caerphilly, United Kingdom Snapshot 2026
Where is Caerphilly?
Caerphilly, United Kingdom
- Continent
- Europe
- Country
- United Kingdom
- City
- Caerphilly
- Population
- 31.1K
- Coordinates
- 51.57°, -3.22°
Caerphilly is a city in United Kingdom with a population of approximately 31.1K. Average temperatures range from 3°C (37°F) in January to 20°C (69°F) in July. The best time to visit is May, June, July, August, September.
Time in Caerphilly right now
Open full time & time zone page 22:55 55
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 Caerphilly
Daylight in Caerphilly today
View full sunrise & sunset page Sunrise
Sunset
Day length
16h 37m
Climate normals for Caerphilly
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
Poor November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 7°C / 3°C | 4°C / -2°C | 13days (92 mm) Wet | 3.9h Poor | 88% Very Muggy | 1.1 Low | Poor | View Details |
| February | 9°C / 3°C | 4°C / -1°C | 12days (90 mm) Wet | 5.1h Fair | 85% Humid | 1.4 Low | Poor | View Details |
| March | 10°C / 4°C | 6°C / 0°C | 15days (92 mm) Wet | 6.8h Fair | 82% Humid | 3.3 Moderate | Poor | View Details |
| April | 13°C / 5°C | 10°C / 1°C | 11days (60 mm) Wet | 9.3h Good | 77% Humid | 4.4 Moderate | Fair | View Details |
| May best | 16°C / 9°C | 14°C / 6°C | 11days (67 mm) Wet | 10.8h Excellent | 76% Humid | 5.6 High | Good | View Details |
| June best | 19°C / 12°C | 18°C / 10°C | 11days (69 mm) Wet | 10.7h Excellent | 77% Humid | 6.2 High | Good | View Details |
| July best | 20°C / 14°C | 20°C / 12°C | 12days (72 mm) Wet | 10.9h Excellent | 77% Humid | 5.8 High | Excellent | View Details |
| August best | 20°C / 14°C | 19°C / 12°C | 11days (77 mm) Wet | 9.8h Good | 79% Humid | 5.2 High | Excellent | View Details |
| September best | 18°C / 12°C | 16°C / 10°C | 13days (106 mm) Wet | 7.6h Good | 83% Humid | 3.7 Moderate | Good | View Details |
| October | 14°C / 9°C | 12°C / 6°C | 15days (121 mm) Wet | 5.8h Fair | 85% Humid | 2.4 Moderate | Poor | View Details |
| November | 10°C / 6°C | 7°C / 2°C | 15days (113 mm) Wet | 4.3h Fair | 88% Very Muggy | 1.3 Low | Poor | View Details |
| December | 9°C / 5°C | 5°C / 1°C | 15days (121 mm) Wet | 3.1h Poor | 90% Very Muggy | 0.8 Low | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 7°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 / 14°C . Aug: 20°C / 14°C . Sep: 18°C / 12°C . Oct: 14°C / 9°C . Nov: 10°C / 6°C . Dec: 9°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 92 mm. Feb: 90 mm. Mar: 92 mm. Apr: 60 mm. May: 67 mm. Jun: 69 mm. Jul: 72 mm. Aug: 77 mm. Sep: 106 mm. Oct: 121 mm. Nov: 113 mm. Dec: 121 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 88%. Feb: 85%. Mar: 82%. Apr: 77%. May: 76%. Jun: 77%. Jul: 77%. Aug: 79%. Sep: 83%. Oct: 85%. Nov: 88%. Dec: 90%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 25 km/h . Feb: 27 km/h . Mar: 25 km/h . Apr: 21 km/h . May: 20 km/h . Jun: 21 km/h . Jul: 20 km/h . Aug: 22 km/h . Sep: 22 km/h . Oct: 24 km/h . Nov: 25 km/h . Dec: 26 km/h .
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 6°C . Feb: 7°C . Mar: 8°C . Apr: 11°C . May: 15°C . Jun: 18°C . Jul: 19°C . Aug: 20°C . Sep: 18°C . Oct: 15°C . Nov: 12°C . Dec: 8°C .
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 6. Aug: UV 5. Sep: UV 4. Oct: UV 2. Nov: UV 1. Dec: UV 1.
Frequently Asked Questions
Caerphilly has a population of approximately 31.1K.
The best months to visit Caerphilly are May, June, July, August, September, when temperatures are pleasant and rainfall is lower.
Caerphilly receives approximately 1080mm of rainfall annually across 154 rainy days.
Caerphilly is located in United Kingdom, in the Europe region.