Alonissos weather and climate
Alonissos weather and climate
Day
13 °C
Night
6 °C
Sea
14 °C
Precipitation
61 mm
in month
Rainy days
9 days
in month
Daylight
10 hours
average
Sunshine
4 hours
average
Humidity
78 %
Day
13 °C
Night
6 °C
Sea
14 °C
Precipitation
61 mm
in month
Rainy days
9 days
in month
Daylight
10 hours
average
Sunshine
4 hours
average
Humidity
78 %
Overview: Alonissos
Travel information
Weather charts for Alonissos
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.
Find more destinations like this
Activities in Alonissos
Destinations with similar weather to Alonissos
Other destinations in Central Greece
Closest cities for Alonissos
Weather overview for Alonissos
Weather overview
Alonissos, a Greek island known for its delightful weather, showcases a wide range of temperatures and conditions throughout the year. The daylight hours bring temperatures that vary significantly, from a mild 13 °C (55 °F) in January to a scorching 32 °C (89 °F) in the peak of summer in July. Nightly temperatures see a similar variation, with the coldest being 5 °C (42 °F) in February and the warmest at 22 °C (72 °F) in July. The island sees its driest period in July with only 3 days of rainfall, while December brings the highest rainfall with 9 days. The warmest sea temperatures delight swimmers in August, reaching up to 25 °C (78 °F), whereas February's sea temperatures drop to a cooler 14 °C (57 °F).
January weather
In Alonissos, a noticeable minimum can be seen in the day temperature, with a value of 13 °C (55 °F), while the sea temperature also begins to decline, recorded at 14 °C (57 °F). A decline in both the amount of rainfall and the number of rainy days marks January. The fewest sun hours (cloud-free) are also seen this month, with 4 hours representing this low point.
February weather
February in Alonissos is characterized by a decreasing rainfall amount, recorded at 47 mm (1.84 in). The sea temperature reaches its lowest point at 14 °C (57 °F), coinciding with the lowest night temperatures of the year at 5 °C (42 °F). The rise in the number of sunny hours begins now, with an observable increase. The wind speeds peak at 4 this month.
March weather
The commencement of the day temperature increase is evident in Alonissos in March, reaching up to 15 °C (60 °F), and the night temperature also begins to rise. The decrease in the number of rainy days initiates this month, coming in at 8 days. The growing number of sun hours (cloud-free) continues, now reaching 6 hours.
April weather
April in Alonissos is marked by the sea temperature's upward trend, which is noted at 15 °C (59 °F), and the day temperature continues its ascent, now at 19 °C (66 °F). The diminishing number of rainy days can be noted as well, standing at 6 days. The average night temperature also increases to 10 °C (51 °F). The rise in the number of sunny hours is maintained, with 8 hours being the current count.
May weather
In Alonissos, with the continued rise in sea temperature now at 18 °C (64 °F), and an ongoing increase in the day temperature reaching 25 °C (76 °F), the decrease in rainfall becomes more apparent. The night temperature also sees a rise, currently at 15 °C (59 °F). A steady climb in the number of sun hours (without clouds) can be observed, now at 10 hours. Additionally, the minimum wind speed is reached, measured at 3.
June weather
The beginning of the tourist season in June in Alonissos brings an observed increase in day temperature, and the sea temperature keeps on rising as well. The number of rainy days shows a further decrease, recorded at 4 days, and the rainfall amount continues its previous trend, ending at 15 mm (0.60 in). The sun hours (without clouds) keep rising, now at 12 hours.
July weather
July in Alonissos experiences the highest day temperatures with a peak at 32 °C (89 °F), alongside a noticeable rise in sea temperature, now at 25 °C (76 °F). The tourist season is now at its height, and the number of rainy days falls to its lowest point with 3 days being the count. The night temperature reaches its zenith of 22 °C (72 °F). The maximum number of sun hours corresponds with this period, totaling 13 hours.
August weather
Alonissos in August sees the continuation of the tourist season and the last stretch of the dry period. The highest sea temperatures of the year can be felt this month. The onset of the decline in the number of sun hours begins, yet still providing a substantial 12 hours.
September weather
September in Alonissos witnesses the start of a decrease in day temperatures, now at 27 °C (80 °F), and a gradual descent in sea temperature, recorded at 24 °C (75 °F). The rainfall amount begins to increase, noted at 24 mm (0.96 in), and the number of rainy days sees a rise as well, documented at 4 days. The night temperature starts to lessen this month.
October weather
October in Alonissos is characterized by a continued decrease in day temperatures, now at 22 °C (71 °F), as sea temperatures also follow a downward trend, listed at 21 °C (69 °F). The rise in the number of rainy days is akin to the previous month, now at 6 days, and the rainfall amount increases similarly, coming to 45 mm (1.76 in). A continued drop in night temperatures is observed, ending at 14 °C (58 °F). The sun hours also begin to diminish following the prior trend.
November weather
With a continued decrease in day temperatures, now at 16 °C (61 °F), and a marked decline in sea temperatures now at 18 °C (64 °F), November in Alonissos ushers in the rise of the number of rainy days, reaching 8 days. The rainfall amount continues to increase, totaling 58 mm (2.28 in). A further drop in night temperatures occurs, now at 10 °C (51 °F). The number of sun hours (without clouds) reflects the downward movement, with 5 hours now being the count.
December weather
December in Alonissos sees similar downward trends in day temperatures, now at 14 °C (57 °F), with the sea temperature also decreasing, now at 15 °C (59 °F). The number of rainy days reaches their apex with 9 days, and the greatest rainfall amount for the year is observed, at 73 mm (2.88 in). The humidity reaches its peak this month as well, with a high of 78 %. A further retreat in night temperatures is noted, resting at 8 °C (46 °F).
FAQs
What's the average number of rainy days in Alonissos during January?
In Alonissos, January typically sees around 9 days of rain.
How strong is the wind on average in February in Alonissos?
The average wind speed in February in Alonissos is about 4.
How many hours of sun can one expect in March in Alonissos?
March offers an average of 6 hours of sunshine in Alonissos.
What's the weather like during the day in Alonissos in April?
April in Alonissos promises pleasant day temperatures averaging around 19 °C (66 °F).
What's the average sea temperature in Alonissos in May?
Sea lovers will enjoy an average sea temperature of about 18 °C (64 °F) in Alonissos during May.
How much does it rain on average in June in Alonissos?
June is relatively dry in Alonissos, with rainfall averaging around 15 mm (0.60 in).
How hot can it get in the daytime in Alonissos during July?
Get ready for high temperatures if you're visiting Alonissos in July; the thermometer can soar to an average of 32 °C (89 °F).
What's the trend for sun hours in Alonissos during August?
August in Alonissos shows the start of a decline in sun hours, but there are still plenty at an average of 12 hours.
Is September in Alonissos good for beach activities?
September's sea temperature of 24 °C (75 °F) and ample sun make it perfect for beach outings in Alonissos.
How would you describe the October climate in Alonissos?
October in Alonissos offers moderate temperatures and a reduction in rainy days, ideal for those who appreciate cooler but still gentle weather.
Can you expect a lot of rain in Alonissos in November?
Yes, November is one of the wetter months in Alonissos, with rain occurring on approximately 8 days.
What is the humidity level in Alonissos during December?
December brings the highest humidity levels of the year in Alonissos, with an average of 78 %.