This website uses cookies. Read about how we use cookies.

Close window

Cardiff Half Marathon 2018 weather forecast

Running the Cardiff Half Marathon

Sun 7 Oct 2018

The Cardiff University Cardiff Half Marathon takes place on Sunday 7 October.

The predominately flat route will take runners past the capital's most iconic landmarks over 13.1 miles.

The course begins outside Cardiff Castle and takes tens of thousands of runners past Cardiff City Stadium, through Penarth and towards Cardiff Bay. The course then heads to the north of Cardiff with a loop of Roath Park Lake before finishing at the Civic Centre in the heart of the city.

Runners will be looking for cool, dry conditions with a light breeze to make for the best conditions to complete the Cardiff Half Marathon.

Whether you are running the 13.1 miles or lining the streets through Cardiff, check the weather forecast below to prepare for the event.

Back to the events calendar.

  • Sunny day 24 °C

    16 °C

  • Light rain 20 °C

    16 °C

  • Sunny intervals 22 °C

    15 °C

  • Sunny intervals 23 °C

    18 °C

  • Cloudy 23 °C

    17 °C

  • Sunny intervals 23 °C

    16 °C

  • Sunny day 24 °C

    17 °C

Thursday (Thursday 19 July 2018)
Now 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00
Warnings
Partly cloudy night Partly cloudy night Cloudy Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Clear night Clear night
<5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5%
Temperature (°C)
15 ° 16 ° 16 ° 16 ° 16 ° 16 ° 17 ° 18 ° 19 ° 20 ° 21 ° 22 ° 22 ° 23 ° 24 ° 24 ° 23 ° 22 ° 21 ° 20 ° 19 ° 19 °
Show detail
Feels like temperature (°C)
15 ° 15 ° 16 ° 16 ° 16 ° 16 ° 17 ° 18 ° 19 ° 20 ° 21 ° 21 ° 22 ° 23 ° 23 ° 22 ° 21 ° 20 ° 19 ° 19 ° 18 ° 18 °
Wind direction, speed & gust (mph)
W 4 5 WNW 4 6 WNW 3 4 WNW 3 4 WNW 2 4 WNW 2 4 NNW 2 3 NNE 1 3 WSW 1 3 SSE 2 5 S 4 8 SSW 4 10 SSW 5 10 SW 5 11 WSW 6 12 W 8 14 W 9 16 W 10 18 W 10 18 W 9 16 WNW 8 14 WNW 6 12
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG G G G G M M G G G VG G G G VG VG VG VG VG VG VG VG
Humidity
73% 72% 72% 73% 74% 73% 71% 62% 59% 55% 54% 53% 51% 48% 45% 45% 48% 51% 55% 60% 67% 68%
UV index
1 1 2 3 4 5 7 8 7 6 5 3 2 1 1 1
Sunrise: 05:18 Sunset: 21:20 Moon phase: First quarter Air pollution: 3 Pollen: L
Friday (Friday 20 July 2018)
00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00
Warnings
Clear night Clear night Clear night Clear night Clear night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Light rain Light rain Cloudy Light rain Light rain Overcast Light rain Light shower day Light rain Overcast Light shower night Cloudy
<5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% 10% 50% 50% 10% 50% 50% 10% 60% 40% 50% 10% 40% 10%
Temperature (°C)
18 ° 18 ° 17 ° 17 ° 16 ° 16 ° 16 ° 16 ° 17 ° 18 ° 19 ° 19 ° 19 ° 19 ° 19 ° 19 ° 19 ° 18 ° 18 ° 18 ° 17 ° 17 ° 17 ° 17 °
Show detail
Feels like temperature (°C)
18 ° 17 ° 17 ° 16 ° 16 ° 15 ° 15 ° 16 ° 16 ° 17 ° 18 ° 18 ° 18 ° 18 ° 18 ° 18 ° 17 ° 17 ° 17 ° 17 ° 17 ° 17 ° 18 ° 17 °
Wind direction, speed & gust (mph)
WNW 6 11 NW 5 9 NW 4 9 WNW 4 8 WNW 4 8 WNW 4 8 WNW 5 8 NW 4 9 NW 5 9 WNW 5 9 WNW 7 13 WNW 8 14 WNW 8 16 WNW 8 16 W 9 16 W 9 16 W 9 16 W 9 16 W 8 16 W 7 13 WSW 6 12 WSW 6 11 WNW 5 10 WNW 5 10
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG VG VG G G G G VG VG VG G VG VG VG VG G VG G G G G
Humidity
67% 66% 66% 67% 67% 68% 68% 66% 65% 62% 57% 57% 58% 62% 63% 65% 69% 74% 80% 82% 85% 87% 88% 89%
UV index
1 1 2 3 4 4 5 6 5 4 4 3 2 1 1 1
Sunrise: 05:19 Sunset: 21:18 Moon phase: First quarter Air pollution: 4 Pollen: L
Saturday (Saturday 21 July 2018)
00:00 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Cloudy Cloudy Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Sunny day Partly cloudy night
10% 10% 10% 10% <5% <5% <5% <5% <5%
Temperature (°C)
17 ° 17 ° 17 ° 17 ° 19 ° 21 ° 22 ° 21 ° 19 °
Show detail
Feels like temperature (°C)
17 ° 17 ° 17 ° 17 ° 18 ° 20 ° 20 ° 19 ° 17 °
Wind direction, speed & gust (mph)
WNW 5 9 NW 5 8 NW 4 8 N 5 11 N 6 13 NW 7 16 WNW 10 20 WNW 12 22 NW 10 17
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
G G G G VG VG VG VG VG
Humidity
88% 88% 90% 85% 70% 62% 56% 56% 65%
UV index
1 4 6 4 1
Sunrise: 05:20 Sunset: 21:17 Moon phase: First quarter Air pollution: 3 Pollen: L
Sunday (Sunday 22 July 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Clear night Clear night Sunny intervals Sunny intervals Cloudy Sunny intervals Sunny intervals Partly cloudy night
<5% <5% <5% <5% <5% <5% <5% <5%
Temperature (°C)
17 ° 15 ° 16 ° 19 ° 21 ° 22 ° 21 ° 19 °
Show detail
Feels like temperature (°C)
16 ° 15 ° 16 ° 18 ° 20 ° 21 ° 20 ° 18 °
Wind direction, speed & gust (mph)
NW 5 8 NNW 4 7 NW 4 8 WNW 6 13 W 9 19 W 11 21 W 12 22 W 11 18
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG VG VG VG VG
Humidity
73% 80% 78% 69% 67% 67% 75% 86%
UV index
1 4 7 5 1
Sunrise: 05:22 Sunset: 21:16 Moon phase: First quarter Air pollution: 2 Pollen: L
Monday (Monday 23 July 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Cloudy Cloudy Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Partly cloudy night
10% 10% 10% 20% 10% <5% <5% <5%
Temperature (°C)
18 ° 18 ° 19 ° 20 ° 22 ° 23 ° 21 ° 19 °
Show detail
Feels like temperature (°C)
18 ° 18 ° 18 ° 20 ° 21 ° 21 ° 20 ° 19 °
Wind direction, speed & gust (mph)
W 8 14 W 8 13 W 7 13 W 8 16 W 9 19 W 11 22 W 10 19 W 7 11
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG G G G VG VG VG VG
Humidity
92% 93% 90% 83% 76% 70% 74% 85%
UV index
1 4 7 4 1
Sunrise: 05:23 Sunset: 21:15 Moon phase: Waxing gibbous
Tuesday (Tuesday 24 July 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Partly cloudy night Cloudy Cloudy Sunny intervals Sunny intervals Sunny day Sunny day Clear night
<5% 10% 10% 10% 10% 10% <5% <5%
Temperature (°C)
18 ° 18 ° 18 ° 20 ° 22 ° 22 ° 21 ° 19 °
Show detail
Feels like temperature (°C)
18 ° 18 ° 18 ° 20 ° 21 ° 21 ° 19 ° 18 °
Wind direction, speed & gust (mph)
W 6 9 WSW 5 7 W 5 10 WSW 6 13 W 7 16 W 9 19 W 11 20 WNW 9 15
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG G G VG VG VG VG VG
Humidity
91% 93% 89% 76% 65% 62% 65% 76%
UV index
1 4 6 4 2
Sunrise: 05:24 Sunset: 21:13 Moon phase: Waxing gibbous
Wednesday (Wednesday 25 July 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Clear night Clear night Sunny intervals Sunny intervals Cloudy Sunny day Sunny day Clear night
<5% <5% 10% 10% 10% <5% <5% <5%
Temperature (°C)
17 ° 17 ° 17 ° 20 ° 22 ° 23 ° 22 ° 20 °
Show detail
Feels like temperature (°C)
17 ° 16 ° 17 ° 19 ° 21 ° 21 ° 20 ° 19 °
Wind direction, speed & gust (mph)
WNW 7 12 WNW 7 11 WNW 7 12 WNW 8 16 W 8 19 WNW 9 19 WNW 11 20 WNW 9 15
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG VG E E VG
Humidity
87% 87% 86% 70% 58% 55% 56% 69%
UV index
1 4 6 4 2
Sunrise: 05:26 Sunset: 21:12 Moon phase: Waxing gibbous
< Cardiff last 24 hours Issued at:

7 October - Running the Cardiff Half Marathon? Check the weather forecast.

This year's event takes runners past a number of sites in the city, including:

  • Cardiff City Stadium
  • Cardiff Bay
  • Wales Millennium Centre
  • Roath Park Lake

The wheelchair race starts at 9.50 am and the rest of the runners will start the half marathon from 10.00 am.

For further information about the race, visit the  Cardiff Half Marathon official website.

 

Follow us on

Facebook, Twitter, YouTube, Instagram, Snapchat, or LinkedIn Facebook Follow @metoffice on Twitter YouTube Instagram Snapchat LinkedIn