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Alonissos weather by month
Check out Alonissos weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Alonissos (°C)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 10 |
11 |
13 |
17 |
22 |
26 |
28 |
28 |
25 |
20 |
16 |
13 |
| Min temperature (night-time) | 4 |
5 |
6 |
9 |
13 |
17 |
19 |
19 |
16 |
13 |
9 |
6 |
| Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
M |
M |
M |
L |
0 |
0 |
0 |
| Sea temperature | 14 |
14 |
14 |
14 |
18 |
22 |
25 |
26 |
24 |
21 |
18 |
15 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Alonissos
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 10 |
11 |
12 |
13 |
14 |
15 |
15 |
14 |
12 |
11 |
10 |
9 |
| UV Index (Maximum) | 2 |
3 |
4 |
6 |
8 |
9 |
9 |
8 |
6 |
4 |
2 |
2 |
Rainfall in Alonissos
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 9 |
9 |
8 |
8 |
7 |
4 |
3 |
3 |
3 |
6 |
9 |
10 |
| Average monthly rainfall (mm) | 115 |
88 |
63 |
38 |
36 |
24 |
22 |
29 |
46 |
76 |
69 |
119 |
More about Alonissos
Alonissos by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Greece
The climate guide for Greece (Alonissos) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Alonissos?
Alonissos has a temperate climate with hot dry summers.
Alonissos weather in January
Expect daytime maximum temperatures of 10°C in Alonissos, Greece in January based on long-term weather averages. There are 4 hours of sunshine per day on average with typically 115 mm of rainfall in the month.
- 10°C max day temperature
10 - 4 hours of sunshine per day
- 9 days with some rainfall
9 - 4°C min night temperature
4 - 10 hours of daylight per day
10 - No heat & humidity
0 - 115 mm of monthly rainfall
115 - 2 (Low) UV index
2 - 14°C sea temperature
14
Alonissos weather in February
Expect daytime maximum temperatures of 11°C in Alonissos, Greece in February based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 88 mm of rainfall in the month.
- 11°C max day temperature
11 - 5 hours of sunshine per day
- 9 days with some rainfall
9 - 5°C min night temperature
5 - 11 hours of daylight per day
11 - No heat & humidity
0 - 88 mm of monthly rainfall
88 - 3 (Moderate) UV index
3 - 14°C sea temperature
14
Alonissos weather in March
Expect daytime maximum temperatures of 13°C in Alonissos, Greece in March based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 63 mm of rainfall in the month.
- 13°C max day temperature
13 - 6 hours of sunshine per day
- 8 days with some rainfall
8 - 6°C min night temperature
6 - 12 hours of daylight per day
12 - No heat & humidity
0 - 63 mm of monthly rainfall
63 - 4 (Moderate) UV index
4 - 14°C sea temperature
14
Alonissos weather in April
Expect daytime maximum temperatures of 17°C in Alonissos, Greece in April based on long-term weather averages. There are 8 hours of sunshine per day on average.
- 17°C max day temperature
17 - 8 hours of sunshine per day
- 8 days with some rainfall
8 - 9°C min night temperature
9 - 13 hours of daylight per day
13 - No heat & humidity
0 - 38 mm of monthly rainfall
38 - 6 (High) UV index
6 - 14°C sea temperature
14
Alonissos weather in May
Expect daytime maximum temperatures of 22°C in Alonissos, Greece in May based on long-term weather averages. There are 10 hours of sunshine per day on average.
- 22°C max day temperature
22 - 10 hours of sunshine per day
- 7 days with some rainfall
7 - 13°C min night temperature
13 - 14 hours of daylight per day
14 - No heat & humidity
0 - 36 mm of monthly rainfall
36 - 8 (Very High) UV index
8 - 18°C sea temperature
18
Alonissos weather in June
Expect daytime maximum temperatures of 26°C in Alonissos, Greece in June based on long-term weather averages. There are 12 hours of sunshine per day on average.
- 26°C max day temperature
26 - 12 hours of sunshine per day
- 4 days with some rainfall
4 - 17°C min night temperature
17 - 15 hours of daylight per day
15 - Moderate heat & humidity
M - 24 mm of monthly rainfall
24 - 9 (Very High) UV index
9 - 22°C sea temperature
22
Alonissos weather in July
Expect daytime maximum temperatures of 28°C in Alonissos, Greece in July based on long-term weather averages. There are 13 hours of sunshine per day on average.
- 28°C max day temperature
28 - 13 hours of sunshine per day
- 3 days with some rainfall
3 - 19°C min night temperature
19 - 15 hours of daylight per day
15 - Moderate heat & humidity
M - 22 mm of monthly rainfall
22 - 9 (Very High) UV index
9 - 25°C sea temperature
25
Alonissos weather in August
Expect daytime maximum temperatures of 28°C in Alonissos, Greece in August based on long-term weather averages. There are 12 hours of sunshine per day on average.
- 28°C max day temperature
28 - 12 hours of sunshine per day
- 3 days with some rainfall
3 - 19°C min night temperature
19 - 14 hours of daylight per day
14 - Moderate heat & humidity
M - 29 mm of monthly rainfall
29 - 8 (Very High) UV index
8 - 26°C sea temperature
26
Alonissos weather in September
Expect daytime maximum temperatures of 25°C in Alonissos, Greece in September based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 46 mm of rainfall in the month.
- 25°C max day temperature
25 - 10 hours of sunshine per day
- 3 days with some rainfall
3 - 16°C min night temperature
16 - 12 hours of daylight per day
12 - Low heat & humidity
L - 46 mm of monthly rainfall
46 - 6 (High) UV index
6 - 24°C sea temperature
24
Alonissos weather in October
Expect daytime maximum temperatures of 20°C in Alonissos, Greece in October based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 76 mm of rainfall in the month.
- 20°C max day temperature
20 - 7 hours of sunshine per day
- 6 days with some rainfall
6 - 13°C min night temperature
13 - 11 hours of daylight per day
11 - No heat & humidity
0 - 76 mm of monthly rainfall
76 - 4 (Moderate) UV index
4 - 21°C sea temperature
21
Alonissos weather in November
Expect daytime maximum temperatures of 16°C in Alonissos, Greece in November based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 69 mm of rainfall in the month.
- 16°C max day temperature
16 - 5 hours of sunshine per day
- 9 days with some rainfall
9 - 9°C min night temperature
9 - 10 hours of daylight per day
10 - No heat & humidity
0 - 69 mm of monthly rainfall
69 - 2 (Low) UV index
2 - 18°C sea temperature
18
Alonissos weather in December
Expect daytime maximum temperatures of 13°C in Alonissos, Greece in December based on long-term weather averages. There are 4 hours of sunshine per day on average with 10 days with some rainfall and typically 119 mm of rainfall in the month.
- 13°C max day temperature
13 - 4 hours of sunshine per day
- 10 days with some rainfall
10 - 6°C min night temperature
6 - 9 hours of daylight per day
9 - No heat & humidity
0 - 119 mm of monthly rainfall
119 - 2 (Low) UV index
2 - 15°C sea temperature
15
More about Alonissos
Alonissos by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Greece
- Explore latest special offers & online deals from TUI
- Free child places & £0 deposits with direct debit available
- Book summer & winter sun holidays in 2026/2027
The climate guide for Greece (Alonissos) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Compare Alonissos weather with the UK
The weather chart below compares the average monthly maximum daytime temperature for Alonissos, Greece and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
More about Greece
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