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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 day 8 °C

    5 °C

  • Sunny intervals 9 °C

    9 °C

  • Cloudy 10 °C

    8 °C

  • Cloudy 10 °C

    7 °C

  • Cloudy 9 °C

    6 °C

  • Cloudy 11 °C

    8 °C

  • Cloudy 11 °C

    7 °C

Sunday (Sunday 16 December 2018)
Now 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 Partly cloudy night Clear night Clear night Clear night Sunny day Sunny day Sunny day Sunny day Sunny day Sunny intervals Cloudy Cloudy Cloudy Cloudy Cloudy Light rain Heavy rain Heavy rain Overcast
<5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% 10% 10% 10% 10% 40% 90% 80% 20%
Temperature (°C)
6 ° 6 ° 6 ° 6 ° 5 ° 5 ° 5 ° 5 ° 6 ° 7 ° 8 ° 8 ° 8 ° 8 ° 7 ° 7 ° 7 ° 8 ° 8 ° 8 ° 8 °
Show detail
Feels like temperature (°C)
4 ° 4 ° 4 ° 4 ° 3 ° 3 ° 3 ° 4 ° 5 ° 6 ° 7 ° 8 ° 7 ° 7 ° 6 ° 6 ° 6 ° 6 ° 6 ° 6 ° 6 °
Wind direction, speed & gust (mph)
SW 6 23 SW 5 19 SW 5 17 SW 5 18 WSW 5 18 SW 4 15 SW 4 14 SW 4 13 SW 5 11 SW 4 10 SSW 4 9 S 3 9 SSE 4 10 SE 4 13 SE 5 15 SE 5 16 SE 6 17 SSE 6 18 S 7 18 S 7 17 SW 6 16
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
M M M M M M M M M M M M M M M M M G M G VG
Humidity
89% 92% 92% 92% 92% 92% 91% 88% 84% 82% 80% 80% 81% 85% 86% 87% 87% 88% 89% 89% 89%
UV index
1 1 1 1 1 1 1
Sunrise: 08:00 Sunset: 15:52 Moon phase: First quarter Air pollution: 2
Monday (Monday 17 December 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
Cloudy Cloudy Cloudy Partly cloudy night Partly cloudy night Clear night Clear night Clear night Clear night Sunny day Sunny day Sunny day Sunny day Sunny day Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Light rain Cloudy Cloudy
10% 10% 10% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% 10% 10% 10% 10% 50% 10% 10%
Temperature (°C)
7 ° 7 ° 7 ° 6 ° 6 ° 5 ° 5 ° 5 ° 5 ° 5 ° 5 ° 6 ° 7 ° 8 ° 9 ° 9 ° 9 ° 9 ° 9 ° 9 ° 10 ° 10 ° 10 ° 10 °
Show detail
Feels like temperature (°C)
5 ° 5 ° 4 ° 4 ° 4 ° 3 ° 3 ° 3 ° 3 ° 3 ° 3 ° 4 ° 5 ° 7 ° 7 ° 8 ° 7 ° 7 ° 7 ° 7 ° 8 ° 8 ° 8 ° 8 °
Wind direction, speed & gust (mph)
WSW 7 16 WSW 7 16 W 8 17 W 8 18 W 7 16 WSW 7 16 WSW 6 15 WSW 6 14 WSW 5 14 WSW 5 13 WSW 6 14 SW 5 12 SW 6 12 SW 5 12 SSW 5 14 SSW 6 15 S 7 18 SSW 8 20 SSW 8 20 SSW 10 23 SSW 10 22 SSW 11 24 SSW 11 25 SSW 11 26
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG G G G M M M M M G G G G G G G G G VG VG VG
Humidity
88% 89% 88% 88% 89% 90% 91% 91% 93% 92% 90% 87% 84% 82% 81% 82% 84% 85% 88% 89% 89% 89% 88% 88%
UV index
1 1 1 1 1 1 1
Sunrise: 08:01 Sunset: 15:52 Moon phase: First quarter Air pollution: 2
Tuesday (Tuesday 18 December 2018)
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Warnings
Cloudy Cloudy Cloudy Cloudy Cloudy Light rain Heavy rain Heavy rain
10% 10% 10% 10% 20% 70% 90% 90%
Temperature (°C)
10 ° 10 ° 10 ° 9 ° 10 ° 9 ° 9 ° 9 °
Show detail
Feels like temperature (°C)
8 ° 8 ° 7 ° 6 ° 6 ° 6 ° 6 ° 6 °
Wind direction, speed & gust (mph)
SSW 12 26 S 13 28 S 14 31 S 17 34 S 18 38 S 18 36 S 15 32 SSW 13 26
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG G M M M
Humidity
87% 85% 83% 82% 76% 78% 84% 86%
UV index
1 1 1
Sunrise: 08:02 Sunset: 15:52 Moon phase: Waxing gibbous Air pollution: 2
Wednesday (Wednesday 19 December 2018)
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Warnings
Light shower night Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
40% 10% 10% 10% 10% 20% 10% 10%
Temperature (°C)
9 ° 8 ° 8 ° 8 ° 9 ° 9 ° 8 ° 8 °
Show detail
Feels like temperature (°C)
6 ° 6 ° 6 ° 6 ° 7 ° 7 ° 5 ° 5 °
Wind direction, speed & gust (mph)
SSW 10 20 SSW 9 19 SSW 9 18 SSW 9 18 SSW 9 19 SSW 9 19 SSW 9 19 SSW 10 20
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG G G G VG VG G
Humidity
86% 88% 89% 88% 85% 83% 86% 87%
UV index
1 1 1
Sunrise: 08:02 Sunset: 15:53 Moon phase: Waxing gibbous Air pollution: 3
Thursday (Thursday 20 December 2018)
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Warnings
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Partly cloudy night
10% 10% 10% 10% 10% 10% 10% <5%
Temperature (°C)
8 ° 7 ° 7 ° 7 ° 9 ° 9 ° 8 ° 7 °
Show detail
Feels like temperature (°C)
5 ° 4 ° 5 ° 4 ° 6 ° 6 ° 5 ° 5 °
Wind direction, speed & gust (mph)
SSW 10 21 SSW 10 20 SW 10 19 SW 10 20 WSW 11 23 WSW 10 20 WSW 9 19 WSW 9 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
86% 86% 87% 87% 81% 79% 83% 87%
UV index
1 1 1
Sunrise: 08:03 Sunset: 15:53 Moon phase: Waxing gibbous Air pollution: 2
Friday (Friday 21 December 2018)
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Warnings
Cloudy Cloudy Cloudy Light rain Cloudy Cloudy Cloudy Cloudy
10% 10% 20% 50% 20% 20% 20% 20%
Temperature (°C)
7 ° 6 ° 7 ° 8 ° 9 ° 10 ° 10 ° 9 °
Show detail
Feels like temperature (°C)
4 ° 4 ° 5 ° 6 ° 7 ° 8 ° 7 ° 7 °
Wind direction, speed & gust (mph)
SW 8 16 SSW 8 16 SSW 8 17 SSW 9 19 SSW 11 21 SW 11 23 SW 12 24 SW 12 24
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG G G G G G G G
Humidity
90% 92% 92% 91% 87% 85% 85% 87%
UV index
1 1 1
Sunrise: 08:04 Sunset: 15:53 Moon phase: Full
Saturday (Saturday 22 December 2018)
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Warnings
Cloudy Cloudy Cloudy Cloudy Sunny intervals Cloudy Cloudy Cloudy
20% 20% 20% 10% 10% 10% 10% 10%
Temperature (°C)
9 ° 9 ° 9 ° 9 ° 10 ° 10 ° 9 ° 8 °
Show detail
Feels like temperature (°C)
7 ° 7 ° 6 ° 7 ° 7 ° 7 ° 6 ° 6 °
Wind direction, speed & gust (mph)
SW 12 23 SW 12 23 SW 11 23 SW 12 24 WSW 13 26 SW 12 24 SW 11 22 SW 11 20
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor)
VG VG VG VG VG VG VG VG
Humidity
87% 88% 87% 86% 83% 83% 85% 89%
UV index
1 1 1
Sunrise: 08:04 Sunset: 15:54 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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