Where is it cool in May?

An escape from the heat, without needing a coat. Ranked from 327 travel destinations using ERA5 climate averages — what May is normally like, not what the weather will do next week.

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Top 20 by May weather

Day and night temperatures are monthly averages of daily highs and lows. Rain is an average across the whole month. Places with the same rating have equally good weather for this; among them, the one covered by more language editions of Wikivoyage, the open travel guide, is listed first. The bar under each place shows its other good months — click one to jump there.
#	Place	Day	Night	Rain	Rating
1	Paris, France	20°C	10°C	2.6 mm/day	Excellent
2	London, United Kingdom	18°C	9°C	1.5 mm/day	Excellent
3	Berlin, Germany	20°C	11°C	1.1 mm/day	Excellent
4	Prague, Czechia	20°C	10°C	2.5 mm/day	Excellent
5	Lisbon, Portugal	21°C	14°C	1.6 mm/day	Excellent
6	Sydney, Australia	19°C	13°C	2.7 mm/day	Excellent
7	Helsinki, Finland	15°C	7°C	1.1 mm/day	Excellent
8	Istanbul, Turkey	20°C	13°C	1.5 mm/day	Excellent
9	Warsaw, Poland	20°C	10°C	1.9 mm/day	Excellent
10	Amsterdam, Netherlands	17°C	11°C	2.0 mm/day	Excellent
11	Stockholm, Sweden	16°C	7°C	1.2 mm/day	Excellent
12	Barcelona, Spain	21°C	13°C	1.5 mm/day	Excellent
13	Oslo, Norway	16°C	6°C	1.8 mm/day	Excellent
14	Buenos Aires, Argentina	16°C	11°C	1.4 mm/day	Excellent
15	Hamburg, Germany	19°C	10°C	1.9 mm/day	Excellent
16	Melbourne, Australia	16°C	9°C	1.8 mm/day	Excellent
17	Kraków, Poland	19°C	9°C	2.1 mm/day	Excellent
18	Baku, Azerbaijan	21°C	15°C	0.7 mm/day	Excellent
19	Copenhagen, Denmark	18°C	9°C	1.4 mm/day	Excellent
20	Riga, Latvia	17°C	9°C	1.4 mm/day	Excellent

What this ranking does and does not tell you

It rates the weather only — daytime and night temperature, rain and sunshine. It says nothing about what there is to see or do, prices, crowds or safety; that part of the decision is yours.

The candidates are 503 established travel destinations, not every town on Earth, so a place missing here may simply not be on the list.

Looking for something else in May?

warm hot dry sunny mild

The same question, another month

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