Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
January brings the lowest temperatures, with an average high of 14.2°C (57.6°F) and an average low of 11.5°C (52.7°F).Humidity
The months with the highest humidity are January, February and December, with an average relative humidity of 72%.Rainfall
The month with the most rainfall is January, when the rain falls for 10.3 days and typically aggregates up to 25mm (0.98") of precipitation.Sea temperature
In Istro, the average seawater temperature in January is 16°C (60.8°F).Note: Swimming is not enjoyable for most people in water that is 16°C (60.8°F). As the temperature descends from 21°C (69.8°F) to 15°C (59°F), breathing control becomes harder.
Daylight
In January, the average length of the day is 10h and 6min.On the first day of January, sunrise is at 07:25 and sunset at 17:15. On the last day of the month, sunrise is at 07:17 and sunset at 17:43 EET.
Sunshine
With an average of 6.4h of sunshine, January has the least sunshine of the year.UV index
January through March and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 4 in January interprets into the following advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
What are the temperatures in January?
What is the most humid month?
What is the average humidity in January?
What is the wettest month?
How much does it rain in January?
What is the sea temperature in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Istro have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Istro, Greece
- Average high temperature in January: 14.2°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 January: 11.5°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 January
Istro, Greece
- Average pressure in January: 1016.8mbar
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 January
Istro, Greece
- Average wind speed in January: 20.6km/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 January
Istro, Greece
- Average humidity in January: 72%
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 January
Istro, Greece
- Average rainfall in January: 25mm
The wettest month (with the highest rainfall) is January (25mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in January
Istro, Greece
- Average rainfall days in January: 10.3 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 January
Istro, Greece
- Average sea temperature in January: 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 January /
Average sunshine in January
Istro, Greece
- Average daylight in January: 10h 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 January: 6h and 2min
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 January
Istro, Greece
- Average sunshine days in January: 15.9 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 January
Istro, Greece
- Average UV index in January: 4
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 January
Istro, Greece
- Average cloud cover in January: 31
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 January
Istro, Greece
- Average visibility in January: 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).
