Andros, a mountainous Cycladic island in the Aegean Sea, enjoys a mild Mediterranean climate with hot, dry summers and mild, wetter winters. Renowned for its strong winds and abundant sunshine, Andros offers lush landscapes in spring and autumn, and cool, refreshing breezes even during the hottest summer days, making it a delightful year-round destination.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Andros experiences a classic Mediterranean climate, with four distinct seasons and significant influence from the surrounding sea and prevailing north winds. Summers (June–September) are hot, dry, and sunny, with average daytime highs of 27–34°C in July and August. The famous Meltemi winds blow steadily from the north, keeping the air fresh and often making the heat more comfortable, especially on the eastern side of the island. Rainfall is minimal in summer, with only 5–9 mm per month, and humidity drops to around 57–60%. Sunshine is abundant, peaking at over 12 hours per day in July, and sea temperatures reach a pleasant 25–27°C, perfect for swimming and water sports.
Winters (December–February) are mild but can be windy and wetter, with average highs of 14–17°C and lows of 8–10°C. Most of the island’s annual rainfall (up to 70–95 mm per month) occurs in this period, and snow is rare but possible on the mountains. Spring (March–May) and autumn (September–November) are transitional, featuring mild to warm temperatures (18–26°C), moderate rainfall, and vibrant landscapes with blooming wildflowers or autumn colours. Winds are present year-round, often reaching 20–30 km/h, and can be brisk in spring and summer, especially on exposed beaches. Daylight ranges from about 9.5 hours in winter to nearly 15 hours in midsummer, supporting a long tourism season and lush vegetation in the cooler months.
Andros is known for its diversity of microclimates, with the western coast generally warmer and less windy, while the east is cooler and more exposed to the Meltemi. The island’s climate supports a rich natural environment, making it ideal for hiking, beach holidays, and exploring charming villages throughout the year.
| Average climate data for Andros, Greece | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 12 | 12 | 14 | 18 | 22 | 26 | 28 | 28 | 25 | 21 | 17 | 14 | 28 |
| Average minimum temperature (°C) | 7 | 7 | 8 | 11 | 15 | 19 | 21 | 21 | 18 | 15 | 12 | 9 | 7 |
| Average precipitation (mm) | 91 | 66 | 57 | 29 | 20 | 9 | 5 | 5 | 16 | 51 | 66 | 96 | 511 |
| Average rainfall days (days) | 10 | 9 | 8 | 7 | 4 | 2 | 2 | 2 | 2 | 5 | 8 | 10 | 69 |
| Average water temperature (°C) | 16 | 15 | 15 | 16 | 18 | 22 | 25 | 26 | 24 | 22 | 18 | 16 | 19 |
| Average daily daylight hours (h) | 9 | 10 | 12 | 13 | 14 | 14 | 14 | 13 | 12 | 11 | 10 | 9 | 12 |
| Average daily sunshine hours (h) | 4 | 5 | 6 | 8 | 10 | 13 | 13 | 12 | 10 | 7 | 5 | 4 | 8 |
| Average UV index | 2 | 3 | 5 | 6 | 8 | 9 | 10 | 9 | 7 | 5 | 3 | 2 | 6 |
The best time to visit Andros is from late April to June and September to early October, when temperatures are warm but not extreme, rainfall is low, and the island is lush and vibrant. These periods are ideal for hiking, beach outings, and enjoying the island’s authentic atmosphere without peak-season crowds.
The least favourable time to visit Andros is from December to February, when rain and strong winds are most frequent, and some tourist facilities may close. While the climate remains mild compared to northern Europe, outdoor activities can be limited by wet and blustery weather.
Andros has a Mediterranean climate with hot, dry summers and mild, wetter winters. The island is windy year-round, with strong Meltemi winds in summer, and enjoys abundant sunshine, especially from May to September.
The best beach weather is from June to September, when temperatures are high (27–34°C), the sea is warm, and rainfall is minimal. The Meltemi wind keeps beaches cool and is ideal for water sports.
Most rain falls in winter (December–February), with up to 70–95 mm per month. Summers are very dry, with only 5–9 mm of rain monthly. Spring and autumn have moderate rainfall and are generally pleasant.
Yes, Andros is famous for its hiking trails. The best seasons for hiking are spring and autumn, when temperatures are mild, landscapes are lush or colourful, and winds are less intense than in peak summer.
Andros is known for strong winds year-round, especially the Meltemi in summer, which can reach 20–30 km/h or more. Winds keep the air fresh and cool but can make some beaches choppy and hiking more challenging.
Pack light, breathable clothing and sun protection for summer, and a windproof jacket for breezy days. In spring and autumn, bring layers and a rain jacket. For winter, add waterproof gear and warmer clothes for cool, wet, and windy weather.
July and August are the busiest months, especially on popular beaches and in main towns. For a quieter experience, visit in late spring or early autumn, when the weather is still excellent but crowds are smaller.
The warmest month, with the highest average maximum temperature, is August (28 °C). The month with the lowest average maximum temperature is February (11.9 °C). Overall, the average maximum temperature over the whole year is 19.8 °C.
The month with the highest average minimum temperature is July (21.1 °C). The coldest month, with the lowest average minimum temperature, is January (7 °C). Overall, the average minimum temperature over the whole year is 13.6 °C.
The month with the highest average water temperature is August (25.6 °C). The month with the lowest average water temperature is February (15.2 °C). Overall, the average water temperature over the whole year is 19.5 °C.
The wettest month, with the highest amount of precipitation, is December (96.1 mm). The driest month, with the least amount of precipitation, is July (5 mm). Over the whole year there are 510.9 mm of rainfall on average.
The month with the most days of rain is January (10.1 days). The month with the fewest days of rain is September (1.9 days). Over the whole year there are 68.6 days of rain on average.
The month with the longest days, so the most daylight, is June (Average daylight: 14.1 h). The month with the shortest days, so the least daylight, is December (Average daylight: 9.1 h). Over the whole year there are 11.8 h of daylight per day on average.
The month with the most sunshine per day is July (Average sunshine: 13 h). The month with the least sunshine per day is January (Average sunshine: 4 h). Over the whole year there are 8.1 h of sunlight per day on average.
The month with the highest average UV index is July (UV index: 10). The months with the lowest average UV index are January and December (UV index: 2). Over the whole year the average UV index is 5.8.
