Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
April
Weather in April
Temperature
April reports an average high-temperature of a comfortable 18.2°C (64.8°F), slightly varied from March's 15.9°C (60.6°F). Istro marks an average drop to a still refreshing 14.4°C (57.9°F) during nighttime in April, following the high of the day.Humidity
The average relative humidity in April is 70%.Rainfall
In Istro, in April, during 6.7 rainfall days, 7mm (0.28") of precipitation is typically accumulated. Throughout the year, there are 64.8 rainfall days, and 119mm (4.69") of precipitation is accumulated.Sea temperature
In April, the average sea temperature is 16°C (60.8°F).Note: Swimming is not a pleasant activity for most individuals in 16°C (60.8°F). Breathing becomes increasingly challenging to control as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in April is 13h and 5min.On the first day of the month, sunrise is at 07:03 and sunset at 19:38. On the last day of April, sunrise is at 06:26 and sunset at 20:02 EEST.
Sunshine
In April, the average sunshine is 11h.UV index
In Istro, the average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 5 during April translates into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April?
What is the average humidity in April?
How much does it rain in April?
What is the sea water temperature in April in Istro?
What is the average length of the day in April?
When is the sunrise / sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April?
Average temperature in April
Istro, Greece
- Average high temperature in April: 18.2°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 April: 14.4°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 April
Istro, Greece
- Average pressure in April: 1014mbar
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 April
Istro, Greece
- Average wind speed in April: 15.1km/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 April
Istro, Greece
- Average humidity in April: 70%
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 April
Istro, Greece
- Average rainfall in April: 7mm
The wettest month (with the highest rainfall) is January (25mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in April
Istro, Greece
- Average rainfall days in April: 6.7 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 April
Istro, Greece
- Average sea temperature in April: 16°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 April /
Average sunshine in April
Istro, Greece
- Average daylight in April: 13h and 1min
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 April: 11h and 0min
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 April
Istro, Greece
- Average sunshine days in April: 22.2 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 April
Istro, Greece
- Average UV index in April: 5
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 April
Istro, Greece
- Average cloud cover in April: 19
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 April
Istro, Greece
- Average visibility in April: 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).
