May Weather in Formia, Italy

Last updated: August 23, 2025

In May, the average temperature in Formia, Italy hovers around 18°C (64°F), with fluctuations from a cool 8°C (48°F) to a warm 28°C (83°F). Be prepared for some rain, as 65 mm (2.5 in) of precipitation is expected over about 9 days. With an average humidity of 70%, the air will feel quite lively.

May Temperature in Formia

In May in Formia, the average temperature is 18°C (64°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as 8°C (48°F). This pleasant climate makes it an ideal time for outdoor exploration and sightseeing.

May Weather in Formia: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Formia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Formia, May typically has an average temperature of 18°C (64°F), with highs reaching up to 28°C (83°F) and lows dropping to around 8°C (48°F).

Data source: Temperature data for Formia generated using information from the Copernicus Climate Change Service.

May Precipitation in Formia

In Formia in May, the precipitation amount is 65 mm (2.5 in) over the course of 9 days.

May Precipitation Trends in Formia

The chart displays monthly precipitation patterns in Formia, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Formia, May typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Formia

In Formia in May humidity is 70%. With an average temperature of 18°C (64°F), this humidity feels like a sticky embrace, making outdoor excursions a bit more cumbersome and requiring frequent breaks to stay refreshed and hydrated.

May Average Humidity in Formia

This chart illustrates the average monthly humidity levels in Formia, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Formia is approximately 70%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Formia

In Formia in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Formia.

Maximum UV Index Levels in Formia for May

The chart shows the monthly maximum UV Index (UVI) for Formia in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Formia typically reaches 9, which falls under the very high exposure category.

Data source: Formia May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How May Weather in Formia Compares to Other Months

Weather in Formia varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Formia, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Formia, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	96 mm (3.8 inches)	84%	moderate
February Weather	11°C (51°F)	115 mm (4.5 inches)	76%	moderate
March Weather	11°C (53°F)	94 mm (3.7 inches)	69%	moderate
April Weather	14°C (57°F)	64 mm (2.5 inches)	70%	high
May Weather	18°C (64°F)	65 mm (2.5 inches)	70%	very high
June Weather	22°C (72°F)	30 mm (1.2 inches)	61%	very high
July Weather	25°C (77°F)	16 mm (0.6 inches)	57%	very high
August Weather	26°C (79°F)	11 mm (0.4 inches)	53%	very high
September Weather	22°C (73°F)	102 mm (4.0 inches)	65%	high
October Weather	18°C (65°F)	116 mm (4.6 inches)	75%	high
November Weather	15°C (59°F)	316 mm (12.4 inches)	81%	moderate
December Weather	11°C (53°F)	209 mm (8.2 inches)	84%	low