Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As May arrives, Istro's weather shows a minor increase in high-temperatures, edging from April's enjoyable 18.2°C (64.8°F) to a pleasant 21.7°C (71.1°F). Istro's nights throughout May are marked by an average low temperature of 17.8°C (64°F), a minor drop from the day's high.Humidity
In May, the average relative humidity in Istro is 68%.Rainfall
In May, in Istro, the rain falls for 4.5 days. Throughout May, 3mm (0.12") of precipitation is accumulated. In Istro, during the entire year, the rain falls for 64.8 days and collects up to 119mm (4.69") of precipitation.Sea temperature
In May, the average sea temperature in Istro is 19°C (66.2°F).Note: The majority of individuals find it unpleasurable to swim in 19°C (66.2°F). It becomes progressively harder to manage one's breathing as the water temperature falls below 21°C (69.8°F).
Daylight
The average length of the day in May is 14h and 1min.On the first day of May in Istro, Greece, sunrise is at 06:25 and sunset at 20:02. On the last day of the month, sunrise is at 06:04 and sunset at 20:25 EEST.
Sunshine
The average sunshine in May is 11.6h.UV index
The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 6 in May transforms into the following instructions:
Fend off overexposure. Sun protection is vital. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the usual temperature for Istro in May?
What is the average humidity in May in Istro?
How many days does it rain in May in Istro?
How cold is the water in May in Istro?
What is the average length of the day in May in Istro?
What time are sunrise and sunset in May in Istro?
How long on average sun shines in May in Istro?
What is the UV index reading in May in Istro?
Average temperature in May
Istro, Greece
- Average high temperature in May: 21.7°C
The warmest month (with the highest average high temperature) is August (28.1°C).
The month with the lowest average high temperature is January (14.2°C).
- Average low temperature in May: 17.8°C
The month with the highest average low temperature is August (23.7°C).
The coldest month (with the lowest average low temperature) is January (11.5°C).
Average pressure in May
Istro, Greece
- Average pressure in May: 1013mbar
The month with the highest atmospheric pressure is December (1017.9mbar).
The month with the lowest atmospheric pressure is July (1009mbar).
Average wind speed in May
Istro, Greece
- Average wind speed in May: 12.6km/h
The windiest month (with the highest average wind speed) is January (20.6km/h).
The calmest month (with the lowest average wind speed) is May (12.6km/h).
Average humidity in May
Istro, Greece
- Average humidity in May: 68%
The months with the highest relative humidity are January, February and December (72%).
The month with the lowest relative humidity is July (65%).
Average rainfall in May
Istro, Greece
- Average rainfall in May: 3mm
The wettest month (with the highest rainfall) is January (25mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in May
Istro, Greece
- Average rainfall days in May: 4.5 days
The month with the highest number of rainy days is December (10.4 days).
The month with the least rainy days is August (0.4 days).
Average sea temperature in May
Istro, Greece
- Average sea temperature in May: 19°C
The best month for swimming (with the highest average sea temperature) is August (25°C).
The coldest months (with the lowest average sea temperature) are February and March (15°C).
Average daylight in May /
Average sunshine in May
Istro, Greece
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 11h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 24min).
Average sunshine days in May
Istro, Greece
- Average sunshine days in May: 24.5 days
The months with the most sunshine days are July and August (30.3 days).
The month with the least sunshine days is January (15.9 days).
Average UV index in May
Istro, Greece
- Average UV index in May: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 4).
Average cloud cover in May
Istro, Greece
- Average cloud cover in May: 13
The month with the most cloud cover is January (Cloud cover 31).
The months with the least cloud cover are July and August (Cloud cover 2).
Average visibility in May
Istro, Greece
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Istro, Greece
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