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

Close window

Great Bristol Half Marathon 2017 weather forecast

Runners taking part in a half marathon

Sun 17 Sep 2017

The Great Bristol Half Marathon on 17 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 18 °C

    14 °C

  • Cloudy 19 °C

    13 °C

  • Light rain 19 °C

    13 °C

  • Sunny intervals 18 °C

    12 °C

  • Light rain 17 °C

    11 °C

  • Light shower day 16 °C

    11 °C

  • Cloudy 15 °C

    10 °C

Monday (Monday 25 September 2017)
Now 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
Heavy shower day Cloudy Cloudy Overcast Cloudy Overcast Light rain Overcast Cloudy Cloudy Cloudy Cloudy Partly cloudy night Partly cloudy night Cloudy
60% 10% 10% 10% 20% 10% 40% 10% 10% 10% 10% 10% <5% <5% <5%
Temperature (°C)
15 ° 15 ° 16 ° 16 ° 16 ° 17 ° 17 ° 17 ° 17 ° 17 ° 17 ° 16 ° 16 ° 16 ° 15 °
Show detail Show detail
Feels like temperature (°C) Expand
15 ° 16 ° 16 ° 16 ° 16 ° 17 ° 17 ° 17 ° 17 ° 17 ° 17 ° 17 ° 16 ° 16 ° 16 °
Wind direction, speed & gust (mph) Expand
N 4 9 N 4 7 NNE 5 8 NE 5 8 ENE 4 6 NE 3 5 NE 3 6 NNE 3 5 NE 4 6 NE 4 8 NE 4 7 NE 3 6 ENE 3 6 ENE 2 5 NE 2 4
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
M M G G G G G G G G G G G G G
Humidity Expand
96% 93% 90% 88% 88% 84% 83% 81% 80% 81% 83% 85% 88% 90% 92%
UV index Expand
1 1 2 2 2 2 2 1 1 1
Sunrise: 07:01 Sunset: 19:03 Moon phase: Waxing crescent Air pollution: 3
Tuesday (Tuesday 26 September 2017)
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
Cloudy Cloudy Cloudy Cloudy Partly cloudy night Cloudy Cloudy Cloudy Overcast Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Partly cloudy night Partly cloudy night Partly cloudy night
10% 10% 10% 10% <5% 10% 10% 10% 10% 10% 10% 10% <5% <5% <5% <5% <5% <5% 10% 10% 10% <5% <5% <5%
Temperature (°C)
15 ° 15 ° 15 ° 15 ° 15 ° 14 ° 14 ° 14 ° 14 ° 15 ° 15 ° 16 ° 17 ° 17 ° 18 ° 18 ° 19 ° 19 ° 18 ° 18 ° 17 ° 17 ° 16 ° 16 °
Show detail Show detail
Feels like temperature (°C) Expand
16 ° 15 ° 15 ° 15 ° 15 ° 15 ° 15 ° 15 ° 15 ° 15 ° 15 ° 16 ° 17 ° 17 ° 18 ° 18 ° 19 ° 18 ° 18 ° 18 ° 17 ° 17 ° 16 ° 16 °
Wind direction, speed & gust (mph) Expand
NE 2 4 NE 2 3 NNE 2 3 NNE 2 4 NNE 2 5 NNE 2 4 NE 2 4 ENE 3 5 E 3 5 ESE 3 6 ESE 3 6 ESE 3 7 ESE 4 8 ESE 5 9 ESE 5 10 SE 4 9 SE 4 8 SE 5 9 SE 5 10 SE 5 10 SE 4 10 SE 4 10 SSE 4 8 SE 4 8
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
M M M M M M M M M M M M G G G G G G G G G G G G
Humidity Expand
92% 93% 94% 94% 95% 95% 94% 94% 93% 91% 88% 85% 80% 75% 71% 68% 66% 67% 69% 73% 76% 80% 84% 88%
UV index Expand
1 1 1 2 2 3 2 2 1 1 1
Sunrise: 07:02 Sunset: 19:00 Moon phase: Waxing crescent Air pollution: 6
Wednesday (Wednesday 27 September 2017)
00:00 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Partly cloudy night Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy Light shower day Light shower night Heavy rain
<5% <5% <5% <5% <5% 10% 40% 40% 80%
Temperature (°C)
15 ° 15 ° 14 ° 14 ° 16 ° 18 ° 18 ° 16 ° 15 °
Show detail Show detail
Feels like temperature (°C) Expand
15 ° 15 ° 13 ° 13 ° 14 ° 16 ° 16 ° 15 ° 14 °
Wind direction, speed & gust (mph) Expand
SE 4 9 SE 4 9 SE 6 13 ESE 7 15 SE 10 20 SE 13 24 SSE 12 23 SSE 10 20 SSE 11 21
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
G G G G G G G M M
Humidity Expand
89% 91% 92% 93% 86% 76% 74% 84% 91%
UV index Expand
2 3 1
Sunrise: 07:04 Sunset: 18:58 Moon phase: Waxing crescent Air pollution: 3
Thursday (Thursday 28 September 2017)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Heavy rain Light shower night Partly cloudy night Sunny day Sunny intervals Cloudy Cloudy Cloudy
90% 50% 10% <5% <5% 10% 10% 10%
Temperature (°C)
15 ° 14 ° 13 ° 15 ° 17 ° 17 ° 15 ° 13 °
Show detail Show detail
Feels like temperature (°C) Expand
14 ° 13 ° 12 ° 13 ° 15 ° 16 ° 14 ° 12 °
Wind direction, speed & gust (mph) Expand
SSW 10 19 SW 9 18 SW 7 14 WSW 8 17 WSW 10 20 SW 9 18 SSW 7 14 S 8 14
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
G G G VG VG VG VG VG
Humidity Expand
92% 91% 91% 83% 70% 64% 75% 86%
UV index Expand
2 3 1
Sunrise: 07:05 Sunset: 18:56 Moon phase: First quarter Air pollution: 2
Friday (Friday 29 September 2017)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Cloudy Cloudy Cloudy Cloudy Light rain Heavy shower day Cloudy Partly cloudy night
10% 10% 10% 10% 50% 60% 20% 10%
Temperature (°C)
13 ° 13 ° 13 ° 15 ° 16 ° 16 ° 14 ° 13 °
Show detail Show detail
Feels like temperature (°C) Expand
12 ° 11 ° 11 ° 13 ° 14 ° 14 ° 13 ° 12 °
Wind direction, speed & gust (mph) Expand
S 8 16 S 9 17 S 10 19 S 12 22 SSW 13 26 SW 12 23 SW 10 18 SW 9 16
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
VG VG G G G G G G
Humidity Expand
88% 89% 89% 84% 81% 79% 82% 87%
UV index Expand
2 2 1
Sunrise: 07:07 Sunset: 18:54 Moon phase: First quarter Air pollution: 2
Saturday (Saturday 30 September 2017)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Cloudy Cloudy Cloudy Cloudy Light shower day Light shower day Cloudy Cloudy
10% 10% 10% 10% 40% 30% 20% 10%
Temperature (°C)
12 ° 11 ° 11 ° 13 ° 15 ° 16 ° 14 ° 12 °
Show detail Show detail
Feels like temperature (°C) Expand
11 ° 10 ° 10 ° 12 ° 14 ° 14 ° 13 ° 11 °
Wind direction, speed & gust (mph) Expand
SW 8 15 SW 7 13 SW 6 10 SW 7 13 WSW 10 20 WSW 10 19 SW 8 14 SSW 8 14
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
G G G VG VG VG G G
Humidity Expand
88% 89% 90% 83% 69% 67% 79% 87%
UV index Expand
2 3 1
Sunrise: 07:09 Sunset: 18:51 Moon phase: First quarter
Sunday (Sunday 1 October 2017)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Clear night
10% 20% 20% 20% 20% 20% 10% 10%
Temperature (°C)
11 ° 11 ° 11 ° 12 ° 15 ° 15 ° 14 ° 13 °
Show detail Show detail
Feels like temperature (°C) Expand
10 ° 10 ° 9 ° 11 ° 12 ° 13 ° 12 ° 11 °
Wind direction, speed & gust (mph) Expand
S 7 13 SSE 8 15 SE 9 16 SE 11 20 SSE 12 24 SE 13 24 SE 11 19 SE 10 18
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
G G G G G G VG VG
Humidity Expand
91% 91% 91% 88% 81% 77% 81% 85%
UV index Expand
1 2 1
Sunrise: 07:10 Sunset: 18:49 Moon phase: Waxing gibbous
< Bristol last 24 hours Issued at:

17 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.

If you're looking for content for your own website, take a look at our weather widget.

Follow us on

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