Caerphilly, United Kingdom Weather

  1. Caerphilly, United Kingdom Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Caerphilly over the next 12 hours
  7. Temperature and possibility of rain in Caerphilly in the coming days
  8. Rainfall in Caerphilly in the coming days
  9. Caerphilly Weather Summary
  10. Weather averages by month
  11. Caerphilly's weather
  12. Frequently asked questions
  13. Comments
Caerphilly, Weather
(Photo by Viktor Forgacs on Unsplash)

Current conditions

Updated:
16°C
60.8°F
°C °F

Condition: Overcast

Pressure: 1,004 hPa

Feel like: 13 °C

Temperature: 16°C

Cloud: 100%

Humidity: 78%

Wind: WSW - 24 km/h

Visibility: 24.36 km

Weather forecast

Sat
19 Sep
13°C / 18°C
Overcast
Sun
20 Sep
14°C / 19°C
Overcast
Mon
21 Sep
12°C / 19°C
Drizzle
Tue
22 Sep
9°C / 17°C
Overcast
Wed
23 Sep
7°C / 16°C
Overcast
Hourly forecast today:
17:00 PM
12° / 16°
12° / 16°
Overcast
78% 48 km/h
18:00 PM
12° / 15°
12° / 15°
Overcast
81% 40 km/h
19:00 PM
13° / 15°
13° / 15°
Overcast
83% 39 km/h
20:00 PM
14° / 15°
14° / 15°
Drizzle
92% 32 km/h
21:00 PM
14° / 16°
14° / 16°
Overcast
90% 38 km/h
22:00 PM
15° / 16°
15° / 16°
Overcast
93% 42 km/h
23:00 PM
15° / 16°
15° / 16°
Overcast
93% 47 km/h
00:00 AM
14° / 16°
14° / 16°
Overcast
90% 48 km/h
01:00 AM
14° / 16°
14° / 16°
Mainly Clear
90% 43 km/h
02:00 AM
14° / 16°
14° / 16°
Overcast
87% 47 km/h
03:00 AM
13° / 16°
13° / 16°
Overcast
86% 48 km/h

30 Day Averages and Extremes

  • Average high 16.6°C
  • Average low 10.93°C
  • Hottest day 24°C (05 September 2026)
  • Coldest day 0°C (01 October 2026)
  • Average humidity 77.03%
  • Days with precipitation 25 days
  • Highest precipitation 71 mm (12 September 2026)

Yesterday's Data

  • Max: 16°C
  • Min: 11°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Caerphilly over the next 12 hours

Temperature and possibility of rain in Caerphilly in the coming days

Rainfall in Caerphilly in the coming days

Caerphilly Climate Summary

Caerphilly features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 10.94ºC (51.69ºF), which is about 0.19% higher than the national average for United Kingdom. Annually, the city experiences approximately 39.39 millimeters (1.55 inches) of rainfall, spread across 96.09 rainy days, accounting for 26.33% of the year.

Longitude 51.578829
Latitude -3.218134
Yearly high temperature 12.8ºC (55.04ºF)
Yearly low temperature 7.44ºC (45.39ºF)
Hottest month July 19.06ºC (66.31ºF)
Coldest month December 4.55ºC (40.19ºF)
Yearly precip 39.39mm (1.55in)
Days with rainfall 96.09 days (26.33%)
Driest month April (81.92%)
Wettest month December (87.1%)

Weather averages by month

Month High / Low (°C) Rain
January 7.06° / 3.33° 8.45 days
February 7.43° / 3.37° 7.27 days
March 9.4° / 3.71° 6.82 days
April 12.13° / 5.36° 6.55 days
May 14.57° / 7.82° 7.27 days
June 17.1° / 10.54° 9.0 days
July 19.06° / 12.4° 7.18 days
August 18.44° / 12.53° 9.91 days
September 16.83° / 10.71° 6.09 days
October 13.62° / 8.87° 8.64 days
November 9.94° / 6.08° 9.27 days
December 8.06° / 4.55° 9.64 days

Caerphilly's weather

Frequently asked questions

1. What is the hottest month in Caerphilly?

July has the highest average monthly temperature (daily mean of 19.06ºC) and December are the coolest (daily mean of 4.55ºC).

2. What should I wear in Caerphilly today?

For today's mild weather in Caerphilly, with temperatures between 15ºC to 18ºC (59.0ºF to 64.4ºF), consider wearing:
- Sun hat (if spending time outdoors)
- Scarf (optional)
- Comfortable jeans or slacks
- Light jacket (for cooler periods)

Temperature

Early
9°C / 11°C
Morning
10°C / 15°C
Afternoon
11°C / 16°C
Evening
14°C / 16°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 432
  • CO 187
  • NH3 0
  • NO2 3
  • O3 77
  • PM10 16
  • PM25 5
  • SO2 0
  • CH4 1,381

Sunrise / Sunset

05:54
18:18