Heathrow
Mean Max: 20.0C (-2.0) Highest Max: 23.0C Sunshine: 162hrs (85%)
Rainfall: 76mm (149%) Number of dry days: 8
Cardiff
Mean Max: 17.6C (-1.9) Highest Max: 19.7C Sunshine: 164hrs (81%)
Rainfall: 144mm (200%) Number of dry days: 6
Plymouth
Mean Max: 16.5C (-2.6) Highest Max: 18.3C Sunshine: 181hrs (85%)
Rainfall: 98mm (151%) Number of dry days: 14
Elmdon
Mean Max: 18.4C (-2.0) Highest Max: 21.6C Sunshine: 147hrs (82%)
Rainfall: 104mm (200%) Number of dry days: 6
Manchester
Mean Max: 17.8C (-1.6) Highest Max: 21.5C Sunshine: 124hrs (78%)
Rainfall: 134mm (172%) Number of dry days: 8
Glasgow
Mean Max: 17.2C (-1.5) Highest Max: 20.5C Sunshine: 125hrs (76%)
Rainfall: 147mm (216%) Number of dry days: 9
Aberdeen
Mean Max: 17.2C (-0.4) Highest Max: 22.6C Sunshine: 167hrs (107%)
Rainfall: 84mm (111%) Number of dry days: 6
Belfast
Mean Max: 17.1C (-1.1) Highest Max: 19.3C Sunshine: 123hrs (87%)
Rainfall: 120mm (169%) Number of dry days: 4
MANCHESTER SUMMER INDEX for 2021: 238
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