Cardiff Weather Forecast

Today 16 May
- 3
- 18
Partly cloudy
Sun 17 May
- 4
- 20
Shower or two
Mon 18 May
- 6
- 21
Partly cloudy
Tue 19 May
- 3
- 23
Sunny
Wed 20 May
- 6
- 24
Mostly sunny
Thu 21 May
- 6
- 24
Mostly sunny
Fri 22 May
- 7
- 21
Partly cloudy

Today 16 May
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Sun 17 May
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Mon 18 May
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Tue 19 May
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Wed 20 May
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Thu 21 May
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Fri 22 May
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm

Today 16 May South West

Partly cloudy. Medium chance of showers in the southwest, slight chance elsewhere. Light winds. Daytime maximum temperatures around 18.

Cardiff Temperature Statistics View More

May Temperature

Collie East (8km)

Lowest 10 May, 2026
0.9 °C
Average 2026
18.8 °C
Highest 2 February, 2026
39.4 °C
Lowest 22 April, 2026
2.1 °C
Average April
14.8 °C
Highest 12 April, 2026
30.2 °C
Lowest 10 May, 2026
0.9 °C
Average May
11.7 °C
Highest 12 May, 2026
25.6 °C

Climate (2021–Present)

Collie East (8km)

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Average Low 2021–2026
8.9 °C
Average 2021–2026
15.7 °C
Average High 2021–2026
23.7 °C

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