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RHS Chelsea Flower Show 2018 weather forecast

Bright spring flowers in bloom

Tue 22 MaySat 26 May 2018

Chelsea plays host to one of the biggest flower shows in the country in May, the RHS Chelsea Flower Show. It has taken place at its current location since 1913 although its predecessor in Kensington began in 1862, under its previous guise of the Great Spring Show.

Exhibitors from the UK, and across the world, spend months preparing their displays to take to the show, hoping to be crowned with one of the show's top rosettes.

There are many awards available for those that create a garden or display for show. Awards range from Silver and Silver-Gilt to Gold. Additional awards - for example, Best Show Garden, the President's Award, Best Fresh Garden or Best Construction Award - are also given, some of which are specific to individual shows.

Back to the events calendar.

  • Sunny intervals 17 °C

    11 °C

  • Light rain 14 °C

    11 °C

  • Heavy rain 13 °C

    7 °C

  • Sunny day 15 °C

    7 °C

  • Sunny day 16 °C

    10 °C

  • Sunny day 18 °C

    10 °C

  • Sunny day 20 °C

    9 °C

Friday (Friday 21 September 2018)
Now 21:00 22:00 23:00
Warnings
Clear night Clear night Clear night Clear night
<5% <5% <5% <5%
Temperature (°C)
15 ° 14 ° 13 ° 13 °
Show detail
Feels like temperature (°C)
13 ° 12 ° 12 ° 11 °
Wind direction, speed & gust (mph)
WSW 10 28 WSW 10 23 WSW 9 20 WSW 9 20
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
G G G VG
Humidity
57% 62% 65% 68%
UV index
Sunrise: 06:44 Sunset: 19:02 Moon phase: Waxing gibbous Air pollution: 2
Saturday (Saturday 22 September 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 Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Light rain Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain
<5% <5% <5% <5% <5% <5% <5% <5% <5% <5% 10% 10% 10% 10% 50% 60% 60% 80% 90% 90% 90% 90% 80% 80%
Temperature (°C)
13 ° 12 ° 12 ° 12 ° 12 ° 12 ° 11 ° 11 ° 12 ° 12 ° 13 ° 13 ° 14 ° 14 ° 13 ° 13 ° 12 ° 12 ° 12 ° 12 ° 11 ° 11 ° 11 ° 12 °
Show detail
Feels like temperature (°C)
11 ° 11 ° 10 ° 10 ° 10 ° 10 ° 10 ° 10 ° 10 ° 11 ° 12 ° 12 ° 12 ° 13 ° 12 ° 12 ° 12 ° 11 ° 11 ° 11 ° 10 ° 10 ° 10 ° 10 °
Wind direction, speed & gust (mph)
WSW 8 18 WSW 8 18 WSW 8 18 WSW 8 17 WSW 7 16 WSW 7 15 WSW 6 14 WSW 6 13 WSW 6 13 WSW 6 13 WSW 6 13 WSW 6 13 WSW 6 13 WSW 7 14 WSW 6 12 WSW 5 10 S 4 8 SSE 4 8 SE 5 10 ESE 6 11 E 7 13 E 7 14 E 7 15 ENE 7 15
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 G G G G G M M M M M M M M G
Humidity
73% 75% 76% 76% 77% 77% 78% 79% 78% 74% 69% 65% 62% 60% 65% 72% 76% 81% 85% 87% 88% 89% 90% 90%
UV index
1 1 1 2 2 2 2 2 1 1 1 1
Sunrise: 06:46 Sunset: 19:00 Moon phase: Waxing gibbous Air pollution: 2
Sunday (Sunday 23 September 2018)
00:00 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Light rain Light rain Light rain Heavy rain Heavy rain Heavy rain Light shower day Clear night Clear night
50% 50% 50% 80% 90% ≥95% 50% 10% <5%
Temperature (°C)
12 ° 12 ° 12 ° 11 ° 11 ° 10 ° 10 ° 11 ° 10 °
Show detail
Feels like temperature (°C)
10 ° 10 ° 10 ° 10 ° 9 ° 7 ° 7 ° 9 ° 8 °
Wind direction, speed & gust (mph)
ENE 7 14 NE 7 14 NE 7 14 NE 7 14 NNE 10 21 NNW 14 30 NNW 14 29 NW 10 22 NW 9 19
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
G G G M P M G G VG
Humidity
91% 92% 90% 89% 89% 87% 73% 68% 73%
UV index
1 1 1 1
Sunrise: 06:47 Sunset: 18:57 Moon phase: Waxing gibbous Air pollution: 2
Monday (Monday 24 September 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Clear night Clear night Sunny day Sunny day Sunny day Sunny day Clear night Clear night
<5% <5% <5% <5% <5% <5% <5% <5%
Temperature (°C)
9 ° 8 ° 7 ° 9 ° 13 ° 15 ° 13 ° 11 °
Show detail
Feels like temperature (°C)
7 ° 6 ° 5 ° 8 ° 12 ° 13 ° 12 ° 10 °
Wind direction, speed & gust (mph)
NW 7 15 NW 6 13 NW 5 10 NW 5 12 NNW 6 16 N 7 18 NNE 6 14 NNE 5 9
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG VG VG VG VG
Humidity
76% 79% 82% 69% 48% 39% 49% 62%
UV index
1 2 4 1
Sunrise: 06:49 Sunset: 18:55 Moon phase: Waxing gibbous Air pollution: 2
Tuesday (Tuesday 25 September 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Clear night Clear night Sunny day Sunny day Sunny day Sunny intervals Clear night Clear night
<5% <5% <5% <5% <5% <5% <5% <5%
Temperature (°C)
10 ° 9 ° 7 ° 10 ° 14 ° 16 ° 15 ° 13 °
Show detail
Feels like temperature (°C)
10 ° 8 ° 7 ° 10 ° 14 ° 15 ° 14 ° 12 °
Wind direction, speed & gust (mph)
NE 3 5 N 3 5 NNE 2 4 NE 2 7 E 3 9 ESE 3 11 SE 5 11 SE 5 10
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG G G VG VG VG VG VG
Humidity
72% 81% 86% 70% 49% 43% 49% 60%
UV index
1 2 4 1
Sunrise: 06:51 Sunset: 18:53 Moon phase: Full Air pollution: 2
Wednesday (Wednesday 26 September 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Clear night Partly cloudy night Cloudy Sunny day Sunny day Sunny day Clear night Clear night
<5% <5% 10% <5% <5% <5% <5% <5%
Temperature (°C)
11 ° 10 ° 10 ° 13 ° 16 ° 18 ° 17 ° 14 °
Show detail
Feels like temperature (°C)
11 ° 10 ° 9 ° 12 ° 15 ° 17 ° 16 ° 13 °
Wind direction, speed & gust (mph)
SE 4 7 SE 4 6 SE 4 7 SE 4 10 S 6 14 S 6 14 S 5 12 S 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
66% 72% 74% 64% 49% 44% 51% 63%
UV index
2 4 1
Sunrise: 06:52 Sunset: 18:51 Moon phase: Full
Thursday (Thursday 27 September 2018)
01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Warnings
Clear night Clear night Clear night Sunny day Sunny day Sunny day Clear night Clear night
<5% <5% <5% <5% <5% <5% <5% 10%
Temperature (°C)
12 ° 11 ° 10 ° 13 ° 17 ° 19 ° 17 ° 14 °
Show detail
Feels like temperature (°C)
12 ° 10 ° 9 ° 12 ° 16 ° 17 ° 15 ° 13 °
Wind direction, speed & gust (mph)
S 4 8 S 4 7 W 4 7 SSW 5 10 WSW 7 15 NW 7 17 WNW 7 16 N 7 15
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG VG VG VG VG
Humidity
71% 78% 84% 73% 55% 55% 62% 70%
UV index
2 3 1
Sunrise: 06:54 Sunset: 18:48 Moon phase: Full
< London last 24 hours Issued at:

22-26 May - Will the displays be in full bloom at this year's Chelsea Flower Show? Check the local weather forecast.

The Chelsea Flower Show includes a wide variety of show gardens, some created by professional gardeners but others by amateurs of all abilities and ages. They will all be hoping to catch the eye of the judges and win an Award.

Exhibitors and spectators alike will be looking for warm, dry weather to keep their exhibitions in top condition and to enjoy all the sites of the show. 

For further information about getting to the ground visit the Royal Horticultural Society official website.

Check the London weather forecast before heading to the Royal Hospital, Chelsea and its extensive grounds, the home of the flower show.

In the video below, Toby Buckland looks at the impact of the weather on our gardens at this time of year. He gives useful tips on which flowers and vegetables to grow, optimal watering and how to harden off young plants.

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

Whether you are displaying at the show or going along to admire the amazing gardens and floral displays, check the Chelsea weather forecast before setting off.

For further information about the event, visit the RHS Chelsea Flower Show website.

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