This information may change. Always check the official source.Last verified: July 2026 by Ondřej Kadlec
Best time to visit Greece
In Athens: April to May and October to November — the months averaging 18–27 °C by day. No other month of the twelve falls inside that band in Athens.
Greece is not one climate. Each reference city below is answered on its own numbers.
Athens
Jan12°January: 12 °C by day, 5 °C at night, 58 mm of rain
Feb13°February: 13 °C by day, 6 °C at night, 48 mm of rain
Mar16°March: 16 °C by day, 7 °C at night, 52 mm of rain
Apr20°April: 20 °C by day, 11 °C at night, 27 mm of rain, recommended
May25°May: 25 °C by day, 15 °C at night, 23 mm of rain, recommended
Jun30°June: 30 °C by day, 20 °C at night, 15 mm of rain
Jul33°July: 33 °C by day, 23 °C at night, 8 mm of rain
Aug33°August: 33 °C by day, 22 °C at night, 7 mm of rain
Sep28°September: 28 °C by day, 19 °C at night, 20 mm of rain
Oct23°October: 23 °C by day, 15 °C at night, 26 mm of rain, recommended
Nov18°November: 18 °C by day, 11 °C at night, 54 mm of rain, recommended
Dec14°December: 14 °C by day, 7 °C at night, 71 mm of rain
Warmest
July, 33 °C
Coolest
January, 12 °C
Driest
August, 7 mm
Wettest
December, 71 mm
Thessaloniki
April to May and September to October — 18–27 °C by day. No other month of the twelve falls inside that band in Thessaloniki.
Jan9°January: 9 °C by day, 1 °C at night, 57 mm of rain
Feb11°February: 11 °C by day, 3 °C at night, 46 mm of rain
Mar14°March: 14 °C by day, 5 °C at night, 64 mm of rain
Apr19°April: 19 °C by day, 9 °C at night, 55 mm of rain, recommended
May24°May: 24 °C by day, 15 °C at night, 64 mm of rain, recommended
Jun29°June: 29 °C by day, 20 °C at night, 50 mm of rain
Jul32°July: 32 °C by day, 22 °C at night, 39 mm of rain
Aug31°August: 31 °C by day, 22 °C at night, 40 mm of rain
Sep26°September: 26 °C by day, 17 °C at night, 57 mm of rain, recommended
Oct21°October: 21 °C by day, 13 °C at night, 62 mm of rain, recommended
Nov15°November: 15 °C by day, 8 °C at night, 60 mm of rain
Dec10°December: 10 °C by day, 3 °C at night, 78 mm of rain
Warmest
July, 32 °C
Coolest
January, 9 °C
Driest
July, 39 mm
Wettest
December, 78 mm
Heraklion
March to May and October to November — 18–27 °C by day. No other month of the twelve falls inside that band in Heraklion.
Jan15°January: 15 °C by day, 9 °C at night, 68 mm of rain
Feb16°February: 16 °C by day, 9 °C at night, 68 mm of rain
Mar18°March: 18 °C by day, 9 °C at night, 60 mm of rain, recommended
Apr21°April: 21 °C by day, 12 °C at night, 34 mm of rain, recommended
May26°May: 26 °C by day, 16 °C at night, 29 mm of rain, recommended
Jun30°June: 30 °C by day, 20 °C at night, 11 mm of rain
Jul31°July: 31 °C by day, 23 °C at night, 3 mm of rain
Aug31°August: 31 °C by day, 23 °C at night, 6 mm of rain
Sep29°September: 29 °C by day, 20 °C at night, 22 mm of rain
Oct24°October: 24 °C by day, 17 °C at night, 35 mm of rain, recommended
Nov20°November: 20 °C by day, 13 °C at night, 42 mm of rain, recommended
Dec16°December: 16 °C by day, 10 °C at night, 65 mm of rain
Warmest
July, 31 °C
Coolest
January, 15 °C
Driest
July, 3 mm
Wettest
January, 68 mm
How this is worked out: a month qualifies when its mean daytime high falls between 18 °C and 27 °C. Where more than five qualify, the answer is the driest run of consecutive qualifying months; where none do, it is the driest three months in a row if the year is hot throughout, or the warmest three if it never gets there. The figures are the thirty-year monthly averages charted below, and they are averages, not a forecast — any single year can miss them by a wide margin.
Athens
Long-term averages for Athens: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Athens
Month
Day (°C)
Night (°C)
Rain (mm)
January
12
5
58
February
13
6
48
March
16
7
52
April
20
11
27
May
25
15
23
June
30
20
15
July
33
23
8
August
33
22
7
September
28
19
20
October
23
15
26
November
18
11
54
December
14
7
71
Thessaloniki
Long-term averages for Thessaloniki: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Thessaloniki
Month
Day (°C)
Night (°C)
Rain (mm)
January
9
1
57
February
11
3
46
March
14
5
64
April
19
9
55
May
24
15
64
June
29
20
50
July
32
22
39
August
31
22
40
September
26
17
57
October
21
13
62
November
15
8
60
December
10
3
78
Heraklion
Long-term averages for Heraklion: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
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