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 snowfall in May
- Average snowfall 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
May
Weather in May
Temperature
May's arrival in Opatija brings a modest temperature shift, moving from a mild 15.4°C (59.7°F) in April to a comfortable 19°C (66.2°F). Throughout May, Opatija records a steady low-temperature average of 15°C (59°F), a minor decrease from its daytime counterpart.Humidity
In Opatija, the average relative humidity in May is 72%.Rainfall
In Opatija, in May, during 17 rainfall days, 67mm (2.64") of precipitation is typically accumulated. Throughout the year, in Opatija, there are 157.3 rainfall days, and 720mm (28.35") of precipitation is accumulated.Snowfall
January, April through November are months without snowfall in Opatija.Sea temperature
In May, the average sea temperature is 18°C (64.4°F).Note: In water with a temperature of 18°C (64.4°F), most individuals do not find swimming enjoyable. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), breathing control becomes more difficult.
Daylight
In May, the average length of the day is 14h and 54min.On the first day of May in Opatija, sunrise is at 05:50 and sunset at 20:09. On the last day of the month, sunrise is at 05:18 and sunset at 20:42 CEST.
Sunshine
The average sunshine in May in Opatija is 10.5h.UV index
In May, the average daily maximum UV index in Opatija is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 5 during May morphs into the following directions:
Heed the precautions - Suggestions to avoid sunburn are made. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Opatija in May?
What is the average humidity in May in Opatija?
How many days does it rain in May in Opatija?
When it does not snow in Opatija?
What is the sea water temperature in May in Opatija?
How many hours of daylight does Opatija have in May?
When is the sunrise / sunset in May in Opatija?
How long on average sun shines in May in Opatija?
What is the UV index reading in May in Opatija?
Average temperature in May
Opatija, Croatia
- Average high temperature in May: 19°C
The warmest month (with the highest average high temperature) is August (26.9°C).
The month with the lowest average high temperature is January (8.5°C).
- Average low temperature in May: 15°C
The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (5.6°C).
Average pressure in May
Opatija, Croatia
- Average pressure in May: 1014.4mbar
The month with the highest atmospheric pressure is December (1019.5mbar).
The month with the lowest atmospheric pressure is July (1014.3mbar).
Average wind speed in May
Opatija, Croatia
- Average wind speed in May: 12.4km/h
The windiest month (with the highest average wind speed) is February (16.7km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).
Average humidity in May
Opatija, Croatia
- Average humidity in May: 72%
The month with the highest relative humidity is November (76%).
The month with the lowest relative humidity is August (66%).
Average rainfall in May
Opatija, Croatia
- Average rainfall in May: 67mm
The wettest month (with the highest rainfall) is November (89mm).
The driest month (with the least rainfall) is January (35mm).
Average rainfall days in May
Opatija, Croatia
- Average rainfall days in May: 17 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is August (11.1 days).
Average snowfall in May
Opatija, Croatia
- Average snowfall in May: 0mm
The months with the highest snowfall are February, March and December (1mm).
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Opatija, Croatia
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.5 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
Opatija, Croatia
- Average sea temperature in May: 18°C
The best month for swimming (with the highest average sea temperature) is August (24.9°C).
The coldest month (with the lowest average sea temperature) is February (10.7°C).
Average daylight in May /
Average sunshine in May
Opatija, Croatia
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 10h and 3min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 18min).
Average sunshine days in May
Opatija, Croatia
- Average sunshine days in May: 9.9 days
The month with the most sunshine days is March (17.5 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in May
Opatija, Croatia
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in May
Opatija, Croatia
- Average cloud cover in May: 31
The months with the most cloud cover are January and February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in May
Opatija, Croatia
- 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).
