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Great Bristol Half Marathon 2018 weather forecast

Runners taking part in a half marathon

Sun 23 Sep 2018

The Great Bristol Half Marathon on 23 September has become a long-held tradition in the national running calendar. Over 10,000 runners take part each year, making this a must do event with an atmosphere second to none.

The course starts at Bristol's historic Harbourside, taking in views around Bristol before returning to the Harbourside for the finish.

Check the official Great Bristol Half Marathon website for more information.

You can check the weather forecast for other events through the Events calendar.

  • Cloudy 15 °C

    8 °C

  • Sunny day 15 °C

    8 °C

  • Sunny day 15 °C

    10 °C

  • Cloudy 16 °C

    8 °C

  • Sunny day 13 °C

    7 °C

  • Cloudy 13 °C

    8 °C

  • Cloudy 15 °C

    9 °C

Thursday (Thursday 18 October 2018)
Now 18:00 19:00 20:00 21:00 22:00 23:00
Warnings
Sunny intervals Sunny day Clear night Clear night Partly cloudy night Clear night Clear night
<5% <5% <5% <5% <5% <5% <5%
Temperature (°C)
14 ° 14 ° 12 ° 12 ° 11 ° 11 ° 10 °
Show detail
Feels like temperature (°C)
13 ° 13 ° 12 ° 11 ° 10 ° 10 ° 10 °
Wind direction, speed & gust (mph)
ENE 6 12 ENE 5 12 NE 5 12 NE 5 14 NE 5 15 ENE 4 14 E 3 11
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
G G G G G G G
Humidity
68% 68% 76% 80% 82% 82% 83%
UV index
1 1
Sunrise: 07:39 Sunset: 18:12 Moon phase: First quarter Air pollution: 2
Friday (Friday 19 October 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
Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Clear night Partly cloudy night Partly cloudy night Sunny intervals Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy 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% <5% <5%
Temperature (°C)
10 ° 10 ° 10 ° 10 ° 9 ° 9 ° 9 ° 8 ° 8 ° 9 ° 10 ° 11 ° 12 ° 13 ° 14 ° 15 ° 15 ° 15 ° 14 ° 13 ° 12 ° 12 ° 11 ° 11 °
Show detail
Feels like temperature (°C)
10 ° 9 ° 9 ° 9 ° 9 ° 8 ° 8 ° 8 ° 8 ° 9 ° 10 ° 11 ° 12 ° 13 ° 14 ° 15 ° 15 ° 14 ° 14 ° 13 ° 12 ° 12 ° 11 ° 11 °
Wind direction, speed & gust (mph)
E 3 10 E 4 10 ENE 3 6 ENE 3 5 ENE 3 5 E 3 6 E 2 5 E 2 4 ENE 2 4 ENE 2 4 E 2 4 E 1 3 ESE 1 3 SSE 1 4 SSW 1 4 WSW 2 4 WNW 3 6 NW 3 6 WNW 3 5 W 2 5 WSW 2 4 S 2 5 S 3 5 S 3 5
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
G G G G G G M M M M M M G G G G G G G G G M G G
Humidity
83% 85% 86% 87% 87% 89% 90% 90% 90% 87% 81% 78% 73% 67% 62% 60% 60% 63% 70% 75% 81% 81% 84% 86%
UV index
1 1 1 1 2 2 2 1 1 1 1
Sunrise: 07:40 Sunset: 18:09 Moon phase: First quarter Air pollution: 2
Saturday (Saturday 20 October 2018)
00:00 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Clear night Clear night Clear night Clear night Sunny day Sunny day Sunny day Clear night Clear night
<5% <5% <5% <5% <5% <5% <5% <5% <5%
Temperature (°C)
10 ° 10 ° 8 ° 8 ° 10 ° 14 ° 15 ° 13 ° 11 °
Show detail
Feels like temperature (°C)
10 ° 9 ° 8 ° 7 ° 10 ° 14 ° 15 ° 12 ° 10 °
Wind direction, speed & gust (mph)
S 2 6 SSW 2 6 SSE 2 5 SSE 2 5 SSE 2 6 SW 4 9 WSW 5 11 WSW 4 8 SW 5 8
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
M M M M M G VG G VG
Humidity
88% 90% 94% 94% 86% 70% 67% 82% 92%
UV index
1 2 1
Sunrise: 07:42 Sunset: 18:07 Moon phase: Waxing gibbous Air pollution: 2
Sunday (Sunday 21 October 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Partly cloudy night Mist Mist Mist Overcast Sunny intervals Cloudy Partly cloudy night
<5% 10% 20% 20% 10% <5% 10% 10%
Temperature (°C)
11 ° 10 ° 11 ° 12 ° 14 ° 16 ° 14 ° 12 °
Show detail
Feels like temperature (°C)
10 ° 10 ° 10 ° 11 ° 13 ° 15 ° 13 ° 11 °
Wind direction, speed & gust (mph)
SW 4 8 SW 4 8 SW 4 8 WSW 5 11 W 7 16 W 7 14 NW 6 10 N 10 20
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
G P P P VG VG VG VG
Humidity
93% 95% 95% 94% 85% 80% 89% 82%
UV index
1 2 1
Sunrise: 07:44 Sunset: 18:05 Moon phase: Waxing gibbous Air pollution: 2
Monday (Monday 22 October 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Partly cloudy night Partly cloudy night Clear night Sunny day Sunny day Sunny day Clear night Clear night
<5% <5% <5% <5% <5% <5% <5% <5%
Temperature (°C)
11 ° 9 ° 8 ° 9 ° 12 ° 12 ° 10 ° 8 °
Show detail
Feels like temperature (°C)
8 ° 7 ° 5 ° 7 ° 10 ° 10 ° 8 ° 7 °
Wind direction, speed & gust (mph)
NNE 11 22 NNE 10 20 NNE 9 18 NNE 9 18 NNE 11 22 N 10 19 NNW 6 11 NNW 5 10
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG VG VG VG VG
Humidity
80% 79% 81% 75% 60% 58% 74% 82%
UV index
1 2 1
Sunrise: 07:46 Sunset: 18:03 Moon phase: Waxing gibbous Air pollution: 2
Tuesday (Tuesday 23 October 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Partly cloudy night
<5% 10% 10% 10% 10% <5% <5% <5%
Temperature (°C)
7 ° 7 ° 7 ° 9 ° 12 ° 13 ° 11 ° 10 °
Show detail
Feels like temperature (°C)
6 ° 6 ° 6 ° 8 ° 10 ° 11 ° 9 ° 8 °
Wind direction, speed & gust (mph)
NW 5 9 WNW 5 9 WNW 6 10 WNW 6 12 WNW 10 19 NW 10 19 NW 8 14 NW 7 12
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG VG VG VG VG
Humidity
86% 88% 90% 84% 72% 71% 81% 86%
UV index
1 2 1
Sunrise: 07:47 Sunset: 18:01 Moon phase: Full
Wednesday (Wednesday 24 October 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Cloudy Cloudy Partly cloudy night Overcast Overcast Cloudy Cloudy Overcast
<5% <5% <5% 10% 10% 10% 10% 10%
Temperature (°C)
9 ° 9 ° 9 ° 11 ° 14 ° 14 ° 12 ° 11 °
Show detail
Feels like temperature (°C)
8 ° 8 ° 8 ° 10 ° 12 ° 13 ° 11 ° 10 °
Wind direction, speed & gust (mph)
NW 6 11 NW 6 11 NW 6 10 NNW 6 12 NNW 8 17 NNW 8 15 NNW 6 10 N 6 10
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG VG VG VG G
Humidity
89% 90% 91% 86% 78% 78% 85% 88%
UV index
1 1 1
Sunrise: 07:49 Sunset: 17:59 Moon phase: Full
< Bristol last 24 hours Issued at:

23 September - Will you be cheering on the Great Bristol Half Marathon competitors? Check the weather forecast.

Weather for runners

Runners will be looking for a fine day to help them get around the course. A mild, but not hot, day with a light breeze will be wanted by both runners and spectators alike.

Back to the events calendar.

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