May weather forecastIsthmia, Greece
May
Weather in May
May, the last month of the spring in Isthmia, is a moderately hot month, with an average temperature ranging between min 13.1°C (55.6°F) and max 23.4°C (74.1°F).Temperature
Isthmia in May denotes a subtle temperature transition, adjusting from an average high of a refreshing 18.5°C (65.3°F) in April to a moderately hot 23.4°C (74.1°F). In the month of May, an average of 13.1°C (55.6°F) marks the low-temperature.Humidity
In May, the average relative humidity in Isthmia is 60%.Rainfall
In Isthmia, in May, during 10.2 rainfall days, 26mm (1.02") of precipitation is typically accumulated. Throughout the year, in Isthmia, there are 121.1 rainfall days, and 396mm (15.59") of precipitation is accumulated.Snowfall
April through November are months without snowfall in Isthmia.Sea temperature
In May, the average sea temperature in Isthmia is 18.8°C (65.8°F).Note: Swimming in 18.8°C (65.8°F) does not offer a pleasant experience for most individuals. The act of controlling one's breathing becomes progressively difficult as the water temperature goes under 21°C (69.8°F).
Daylight
The average length of the day in May in Isthmia is 14h and 14min.On the first day of the month, sunrise is at 06:31 and sunset at 20:18. On the last day of May, sunrise is at 06:07 and sunset at 20:44 EEST.
Sunshine
In May, the average sunshine is 11.4h.UV index
In May, the average daily maximum UV index in Isthmia is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Isthmia, Greece
- Average high temperature in May: 23.4°C
The warmest month (with the highest average high temperature) is July (30.7°C).
The month with the lowest average high temperature is January (10.6°C).
- Average low temperature in May: 13.1°C
The month with the highest average low temperature is August (20.4°C).
The coldest month (with the lowest average low temperature) is January (4.1°C).
Average pressure in May
Isthmia, Greece
- Average pressure in May: 1013.3mbar
The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is July (1011.6mbar).
Average wind speed in May
Isthmia, Greece
- Average wind speed in May: 7.9km/h
The windiest month (with the highest average wind speed) is August (9.5km/h).
The calmest month (with the lowest average wind speed) is November (7.6km/h).
Average humidity in May
Isthmia, Greece
- Average humidity in May: 60%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (50%).
Average rainfall in May
Isthmia, Greece
- Average rainfall in May: 26mm
The wettest month (with the highest rainfall) is March (53mm).
The driest month (with the least rainfall) is August (9mm).
Average rainfall days in May
Isthmia, Greece
- Average rainfall days in May: 10.2 days
The month with the highest number of rainy days is February (13.3 days).
The month with the least rainy days is August (5 days).
Average snowfall in May
Isthmia, Greece
- Average snowfall in May: 0mm
The month with the highest snowfall is December (15mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Isthmia, Greece
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in May
Isthmia, Greece
- Average sea temperature in May: 18.8°C
The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (15.3°C).
Average daylight in May /
Average sunshine in May
Isthmia, Greece
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 11h and 24min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in May
Isthmia, Greece
- Average sunshine days in May: 18.8 days
The month with the most sunshine days is July (24.7 days).
The month with the least sunshine days is February (13.8 days).
Average UV index in May
Isthmia, Greece
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Isthmia, Greece
- Average cloud cover in May: 19
The month with the most cloud cover is January (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in May
Isthmia, Greece
- Average visibility in May: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).





