Caerphilly Climate by Month
Caerphilly, Wales, United Kingdom
Mild summers and cool winters, with rain spread through the year.
Mild summers and cool winters, with rain spread through the year: that's Caerphilly's climate in short. July is the warmest month, with highs around 69°F (20°C); January is the coolest at 46°F (8°C), and nights dip to 36°F (2°C). It gets 48 in (1216 mm) of rain a year, spread across the months. The air is humid, averaging 84% relative humidity.
- Warmest month
- 69°F(20°C)
- Average high, July
- Coldest nights
- 36°F(2°C)
- Average low, February
- Rain per year
- 48 in(1216 mm)
- No clear rainy season
- Humidity
- 84%
- Sunniest: June
Best and worst months in Caerphilly
Best for weatherThe most comfortable weather comes from June to August, with highs around 68°F (20°C) and about 3.6 in (91 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 46°F (8°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Caerphilly weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 46°F(8°C) | 36°F(2°C) | 4.4 in(113 mm) | 92% | 0.7 |
| FebFebruary | 46°F(8°C) | 36°F(2°C) | 3.7 in(93 mm) | 92% | 1.4 |
| MarMarch | 50°F(10°C) | 38°F(3°C) | 3.4 in(87 mm) | 82% | 2.5 |
| AprApril | 55°F(13°C) | 40°F(5°C) | 3.0 in(75 mm) | 80% | 3.9 |
| MayMay | 61°F(16°C) | 45°F(7°C) | 3.0 in(76 mm) | 80% | 4.9 |
| JunJuneBest | 66°F(19°C) | 51°F(10°C) | 3.1 in(78 mm) | 79% | 5.3 |
| JulJulyBest | 69°F(20°C) | 54°F(12°C) | 3.5 in(90 mm) | 81% | 4.9 |
| AugAugustBest | 68°F(20°C) | 54°F(12°C) | 4.1 in(105 mm) | 81% | 4.1 |
| SepSeptember | 64°F(18°C) | 51°F(10°C) | 3.7 in(94 mm) | 81% | 3.0 |
| OctOctober | 57°F(14°C) | 46°F(8°C) | 5.1 in(130 mm) | 84% | 1.7 |
| NovNovember | 51°F(11°C) | 41°F(5°C) | 5.7 in(145 mm) | 85% | 0.9 |
| DecDecember | 47°F(8°C) | 37°F(3°C) | 5.1 in(130 mm) | 88% | 0.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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