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Sea Temperature in Ostia in May

© Bert G Kaufmann
Complete information on the sea temperature range in the Mediterranean Sea in Ostia in May. Historical daily data. Climate details for May. Tips on swimming conditions and beach relaxation in Ostia. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Water Temperature Range in Ostia in May
16°C
MINIMUN
19.5°C
AVERAGE
23°C
MAXIMUM
Historical Data of Water Temperature in May in Ostia
Water Temperature Chart for Mediterranean Sea in Ostia in May
Sea Temperature Table in Ostia in May Over the Past Years
Day | 2024 | 2023 | 2022 | Average |
---|---|---|---|---|
May 1 | 16°C | 17°C | 16°C | 16.3°C |
May 2 | 16°C | 17°C | 16°C | 16.5°C |
May 3 | 16°C | 17°C | 16°C | 16.3°C |
May 4 | 17°C | 17°C | 16°C | 16.8°C |
May 5 | 16°C | 18°C | 17°C | 16.8°C |
May 6 | 17°C | 18°C | 17°C | 17.3°C |
May 7 | 17°C | 18°C | 17°C | 17.3°C |
May 8 | 17°C | 18°C | 17°C | 17.3°C |
May 9 | 18°C | 18°C | 18°C | 17.8°C |
May 10 | 18°C | 18°C | 18°C | 17.8°C |
May 11 | 18°C | 18°C | 18°C | 18.0°C |
May 12 | 17°C | 18°C | 18°C | 17.5°C |
May 13 | 17°C | 18°C | 19°C | 18.0°C |
May 14 | 18°C | 19°C | 19°C | 18.5°C |
May 15 | 18°C | 18°C | 19°C | 18.3°C |
May 16 | 18°C | 18°C | 19°C | 18.5°C |
May 17 | 18°C | 18°C | 20°C | 18.8°C |
May 18 | 17°C | 19°C | 20°C | 19.0°C |
May 19 | 17°C | 19°C | 20°C | 18.8°C |
May 20 | 18°C | 20°C | 20°C | 19.3°C |
May 21 | 18°C | 19°C | 20°C | 19.0°C |
May 22 | 18°C | 19°C | 21°C | 19.3°C |
May 23 | 18°C | 20°C | 21°C | 19.8°C |
May 24 | 18°C | 20°C | 21°C | 19.8°C |
May 25 | 18°C | 21°C | 21°C | 20.0°C |
May 26 | 18°C | 20°C | 22°C | 19.8°C |
May 27 | 18°C | 20°C | 22°C | 19.8°C |
May 28 | 19°C | 21°C | 22°C | 20.3°C |
May 29 | 19°C | 21°C | 22°C | 20.5°C |
May 30 | 19°C | 20°C | 23°C | 20.5°C |



Ostia Climate and Swimming Opportunities in May
23°C
Average Day Air Temperature
13°C
Average Night Air Temperature
34 mm
Precipitation Amount per Month
7 days
Number of Rainy Days
14 hrs
Daylight
per Day
9 hrs
Sunshine
per Day
11 km/h
Average Wind Speed
75%
Average
humidity
Ostia lies within the Lazio in Italy. The average daytime temperature in Ostia in May is 23°C (73°F), while the nighttime average is 13°C (56°F). There are typically seven rainy days during the month, with a total precipitation of 34 mm (1.3 inches). The daylight duration in May in Ostia is 14 hours, with an average of 9 hours of sunshine per day. The average wind speed in May is 11 km/h (7 mph), and the humidity level is around 75%.
The water temperature in Ostia in May ranges from 16°C to 20°C (61°F to 68°F). At the beginning of the month, the average temperature is around 17°C (63°F), shifting to 18°C (64°F) by mid-May and reaching 20°C (68°F) in the last ten days. Overall, the average sea temperature in Ostia for May is 18°C (64°F). Very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.
Sea Temperature in May in Nearby Cities
Frequently Asked Questions About Water Temperatures in May in Ostia
What is the sea temperature in Ostia in May?
The water temperature in the Mediterranean Sea in Ostia in May ranges from 16°C to 20°C (61°F to 68°F).
Is it possible to swim in the Mediterranean Sea in Ostia in May?
The average sea temperature in Ostia in May is 18°C (64°F), and the air temperature is 23°C (73°F), so very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.