Thessaloniki or Athens in May?
On climate data, Athens comes out ahead overall in May. See the per-criterion details below.
ThessalonikiPhoto: Ωριγένης · CC BY-SA 3.0
AthensPhoto: Jebulon · CC0Key figures in May
| Criterion | Thessaloniki | Athens |
|---|---|---|
| Average daily high | 24 °C | 25 °C |
| Average daily low | 13 °C | 15 °C |
| Sea | 19 °C | 19 °C |
| Rainy days | 8 rainy days (est.) | 5 rainy days (est.) ★ |
| Sun | 8 h/day | 8 h/day |
| Humidity | 64 % | 62 % |
Winner by travel type
Trade-offs
- Athens is drier, with about 4 fewer rainy days.
Thessaloniki or Athens in May: the short answer
In May, Athens comes out ahead on the overall climate score (Thessaloniki 81/100 vs Athens 86/100). That is a snapshot of one month, though — which one truly fits depends on what you want from the trip, so the breakdown below goes criterion by criterion.
This comparison focuses on May as a representative month for the pair; for any other month, use each destination's month-by-month pages. Across the whole year Thessaloniki averages a climate score of 63/100, Athens 68/100. Both profiles below are historical monthly averages, not a forecast.
Weather in May, side by side
The average daily high is about 24 °C in Thessaloniki and 25 °C in Athens — warmer in Athens. Average daily lows are around 13 °C versus 15 °C.
On rain, Thessaloniki sees about 8 rainy days in May and Athens about 5 — drier in Athens. Sunshine is comparable (8 vs 8 hours a day).
Sea temperature and swimming
In May the water is about 19 °C at Thessaloniki and 19 °C at Athens. Over the year, Thessaloniki is comfortable for swimming (from ~21 °C) in June, July, August, September and October, Athens in June, July, August, September and October. Peak sea warmth is August for Thessaloniki and August for Athens.
Rain and sun across the year
Over a full year Thessaloniki records roughly 84 rainy days and Athens about 73 — the drier of the two overall is Athens. At their sunniest, Thessaloniki reaches about 9 hours of sun a day (July) and Athens about 9 (July). If dependable dry, sunny weather is your top priority, weigh these annual totals alongside the single month above.
Best time to visit each
Climatically, Thessaloniki is at its best in May, June, September and October, while Athens peaks in May, June, September and October. If your dates are fixed, pick the destination whose strong season overlaps them; if you are flexible, plan around these windows.
Which suits which kind of trip
Based on the May scores for each travel style:
Beach & swimming: Athens scores higher in May (Thessaloniki 74 vs Athens 80).
City breaks: Athens scores higher in May (Thessaloniki 92 vs Athens 96).
Active & hiking: Athens scores higher in May (Thessaloniki 83 vs Athens 87).
Family: Athens scores higher in May (Thessaloniki 79 vs Athens 85).
Verdict: which should you pick?
In May, Athens leads across every scored category here — the overall score and each travel type — so on the climate data it is the clearer pick this month. Over the year, Athens carries the higher overall climate score. Your own priority (sun, sea, low rain or sightseeing comfort) still matters, and the month-by-month pages for each destination give you the full picture before you book.