COOLCATION INDEX · SUMMER 2026

Skip the heatwave.
Find where it's cool.

Climate comfort scores for 63 destinations, built on 5 years of daily ERA5 data — so you know if Rome in September is a good idea before you book.

WHEN ARE YOU TRAVELLING?
Max daytime temp
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Coolest picks for August

35 of 63 destinations under 28°C within 6h · sorted by comfort score
Faroe Islands · 2h from LON
100
COMFORT
13.2°C avg high
0 hot nights
LOW HEAT Check stays →
Iceland · 3h from LON
100
COMFORT
13.3°C avg high
0 hot nights
LOW HEAT Check stays →
Norway · 3.5h from LON
100
COMFORT
16.8°C avg high
0 hot nights
LOW HEAT Check stays →
Norway · 2h from LON
100
COMFORT
17.2°C avg high
0 hot nights
LOW HEAT Check stays →
Finland · 3.5h from LON
100
COMFORT
18.5°C avg high
0 hot nights
LOW HEAT Check stays →
United Kingdom · 1h from LON
100
COMFORT
18.5°C avg high
0 hot nights
LOW HEAT Check stays →
Sweden · 2h from LON
100
COMFORT
19.5°C avg high
0 hot nights
LOW HEAT Check stays →
Ireland · 1h from LON
100
COMFORT
19.5°C avg high
0 hot nights
LOW HEAT Check stays →
Finland · 3h from LON
100
COMFORT
19.9°C avg high
1 hot nights
LOW HEAT Check stays →
Denmark · 2h from LON
100
COMFORT
20.3°C avg high
0 hot nights
LOW HEAT Check stays →
#11Oslo
Norway · 2h from LON
100
COMFORT
20.5°C avg high
0 hot nights
LOW HEAT Check stays →
Sweden · 2.5h from LON
100
COMFORT
20.7°C avg high
0 hot nights
LOW HEAT Check stays →
Netherlands · 1h from LON
99
COMFORT
21.9°C avg high
0 hot nights
LOW HEAT Check stays →
United Kingdom · 1h from LON
99
COMFORT
22.8°C avg high
0 hot nights
LOW HEAT Check stays →
Estonia · 3h from LON
98
COMFORT
20.9°C avg high
1 hot nights
LOW HEAT Check stays →
#16Riga
Latvia · 2.5h from LON
98
COMFORT
22.1°C avg high
1 hot nights
LOW HEAT Check stays →
Lithuania · 2.5h from LON
98
COMFORT
23.1°C avg high
0 hot nights
LOW HEAT Check stays →
Belgium · 1h from LON
97
COMFORT
23.3°C avg high
0 hot nights
LOW HEAT Check stays →
Germany · 1.5h from LON
95
COMFORT
24.5°C avg high
1 hot nights
LOW HEAT Check stays →
Germany · 1.5h from LON
93
COMFORT
23.9°C avg high
0 hot nights
LOW HEAT Check stays →
Poland · 2.5h from LON
88
COMFORT
24.9°C avg high
1 hot nights
LOW HEAT Check stays →
France · 1h from LON
88
COMFORT
25.2°C avg high
1 hot nights
LOW HEAT Check stays →
Poland · 2.5h from LON
86
COMFORT
24.8°C avg high
1 hot nights
LOW HEAT Check stays →
Portugal · 2h from LON
85
COMFORT
24.6°C avg high
1 hot nights
LOW HEAT Check stays →
Czechia · 2h from LON
84
COMFORT
25.3°C avg high
1 hot nights
LOW HEAT Check stays →
Switzerland · 1.5h from LON
83
COMFORT
24.6°C avg high
1 hot nights
LOW HEAT Check stays →
Slovenia · 2h from LON
78
COMFORT
25.2°C avg high
1 hot nights
LOW HEAT Check stays →
Switzerland · 1.5h from LON
77
COMFORT
24.8°C avg high
2 hot nights
LOW HEAT Check stays →
Austria · 2h from LON
73
COMFORT
25.6°C avg high
0 hot nights
LOW HEAT Check stays →
Austria · 2h from LON
66
COMFORT
26.9°C avg high
6 hot nights
LOW HEAT Check stays →
Switzerland · 1.5h from LON
60
COMFORT
26.9°C avg high
3 hot nights
LOW HEAT Check stays →
Slovenia · 2h from LON
60
COMFORT
27.3°C avg high
0 hot nights
MODERATE Check stays →
Portugal · 3.5h from LON
59
COMFORT
25.3°C avg high
19 hot nights
LOW HEAT Check stays →
Spain · 4h from LON
40
COMFORT
27°C avg high
28 hot nights
MODERATE Check stays →
Portugal · 3.5h from LON
36
COMFORT
27.5°C avg high
19 hot nights
MODERATE Check stays →

Wondering if it's too hot?

Month-by-month heat data for every destination — average highs, tropical nights and extreme-heat days.

Month by month, at a glance

Average daytime highs from the last 5 summers and winters. Click a month to update rankings.

DAYTIME HIGH cold comfortable hot extreme

Already booked? Watch your trip.

Tell us where and when you're going. If a heatwave becomes likely for your dates, we'll email you early — with cooler day-by-day alternatives nearby.