Risca

Caerphilly County Borough, Wales, United Kingdom

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Current Weather

15°

Mostly Cloudy

Feels Like: 15°

Min: 12°

Max: 18°

The next few hours will be partly cloudy, with today reaching 18°C and dropping to 14°C. The coming days will be partly cloudy starting in the evening.

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Hourly Forecast

15° 15° 16° 17° 18° 18° 18° 17° 17° 16° 15° 14° 14° 14° 14° 14° 14° 14° 15° 15° 15° 16° 16° 16°
6%
98%
98%
100%
100%
100%
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
Today
Tomorrow

Daylight Hours

06:57

Sunrise

19:15

Sunset

12 hours 18 minutes of sunlight today

Moon

Waxing Crescent

13:31

Moonrise

20:52

Moonset

Daily Forecast

Today

12°
18°

Thursday

13°
18°

Friday

10°
18°

Saturday

17°
18°

Sunday

13°
17°

Monday

15°
20°

Tuesday

13°
18°

Wednesday

13°
20°

Thursday

16°
22°

Friday

14°
19°

Air Quality Data Available

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UV Index

No protection needed
2 Low
Low Extreme

Humidity

76% Humid
Low High

Weather in Risca today, September 16, 2026

Rain features in Risca on September 16, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Expect a grey start, with morning cloud around 99% by 10:00. Outdoor plans early on should not rely on bright skies.

The day peaks near 18°C and cools toward 12°C. Relative humidity sits between 62% and 90%, reaching its peak around 23:00. Expect gentle winds, highest near 18:00 at 5.7 km/h.

Afternoon skies stay clogged, peaking close to 100% near 15:00. The grey theme continues rather than clearing out. Visibility holds near 34.9 km, though it can fall to 22.2 km. Sunrise is at 06:57 and sunset at 19:15, giving 12 hours 18 minutes of sunlight today.

The practical takeaway for Risca on September 16, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 18°C.

Frequently asked questions about weather in Risca

How warm does it get in Risca?

The warmest month in Risca is July, with average high temperatures of 21°C. The average temperature during this period is around 18°C.

How cold does it get in Risca?

The coldest month in Risca is January, with average low temperatures of 3°C. The average temperature during this period is around 6°C.

What is the wettest time of year in Risca?

The wettest month in Risca is October, with an average of 105mm of precipitation.

What is the driest time of year in Risca?

The driest month in Risca is April, with an average of 58mm of precipitation.

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Metric (°C, km/h)