May Weather in Istiaia, Greece

Last updated: August 23, 2025

In Istiaia, Greece, the average temperature in May is 19°C (67°F). You'll experience a comfortable climate, with temperatures ranging from a cool 11°C (52°F) to a warm 31°C (89°F). Expect about 38 mm (1.5 in) of precipitation spread over 5 days, and a notable average humidity of 71%. Enjoy the refreshing yet varied weather!

May Temperature in Istiaia

In May in Istiaia, the average temperature is 19°C (67°F). Maximums can reach 31°C (89°F), and minimums can be as low as 11°C (52°F). This makes Istiaia an ideal destination for travelers seeking a mild climate with warm days and cooler nights.

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

The chart illustrates May temperature patterns in Istiaia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Istiaia, May typically has an average temperature of 19°C (67°F), with highs reaching up to 31°C (89°F) and lows dropping to around 11°C (52°F).

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

May Precipitation in Istiaia

In Istiaia in May, the total precipitation amount is 38 mm (1.5 in) spread over a duration of 5 days.

May Precipitation Trends in Istiaia

The chart displays monthly precipitation patterns in Istiaia, 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 Istiaia, May typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 5 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Istiaia

In Istiaia in May, humidity is 71%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel pleasant yet slightly sticky, as the air clings gently to your skin and invites you to stay hydrated while exploring.

May Average Humidity in Istiaia

This chart illustrates the average monthly humidity levels in Istiaia, 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 Istiaia is approximately 71%, 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 Istiaia

In Istiaia in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Istiaia.

Maximum UV Index Levels in Istiaia for May

The chart shows the monthly maximum UV Index (UVI) for Istiaia 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 Istiaia typically reaches 10, which falls under the very high exposure category.

Data source: Istiaia 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 Istiaia Compares to Other Months

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

This table compares monthly weather conditions in Istiaia, 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 (48°F)	105 mm (4.1 inches)	82%	moderate
February Weather	10°C (51°F)	99 mm (3.9 inches)	78%	moderate
March Weather	12°C (53°F)	87 mm (3.4 inches)	76%	high
April Weather	14°C (58°F)	76 mm (3.0 inches)	70%	very high
May Weather	19°C (67°F)	38 mm (1.5 inches)	71%	very high
June Weather	24°C (75°F)	25 mm (1.0 inches)	61%	very high
July Weather	26°C (80°F)	59 mm (2.3 inches)	57%	very high
August Weather	27°C (80°F)	23 mm (0.9 inches)	51%	very high
September Weather	24°C (75°F)	56 mm (2.2 inches)	58%	very high
October Weather	19°C (66°F)	100 mm (3.9 inches)	73%	high
November Weather	15°C (59°F)	88 mm (3.5 inches)	79%	moderate
December Weather	12°C (53°F)	101 mm (4.0 inches)	81%	moderate