May Weather in Warsaw, United States

Last updated: June 24, 2025

In May, the average temperature in Warsaw, United States hovers around 18°C (65°F). Daily highs can reach up to a scorching 35°C (96°F), while chilly nights may drop to a cool 3°C (38°F). Rainfall is a common occurrence, with an average of 172 mm (6.8 in) spread over 16 days, contributing to a humidity level of 78%. Prepare for a month that blends warm days and refreshing evenings!

May Temperature in Warsaw

In May in Warsaw, the average temperature is 18°C (65°F). Maximum temperatures can reach 35°C (96°F), while minimum temperatures can drop as low as 3°C (38°F). Overall, it's a month that offers a diverse range of temperatures, making it ideal for travelers who enjoy both warm and cooler weather.

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

The chart illustrates May temperature patterns in Warsaw, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Warsaw, May typically has an average temperature of 18°C (65°F), with highs reaching up to 35°C (96°F) and lows dropping to around 3°C (38°F).

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

May Precipitation in Warsaw

In Warsaw in May, the precipitation amount is 172 mm (6.8 in) over the course of 16 days.

May Precipitation Trends in Warsaw

The chart displays monthly precipitation patterns in Warsaw, 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 Warsaw, May typically receives around 172 mm (6.8 inches) of precipitation spread over approximately 16 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 Warsaw

In Warsaw in May, humidity is 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

May Average Humidity in Warsaw

This chart illustrates the average monthly humidity levels in Warsaw, 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 Warsaw is approximately 78%, 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 Warsaw

In Warsaw 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 Warsaw.

Maximum UV Index Levels in Warsaw for May

The chart shows the monthly maximum UV Index (UVI) for Warsaw 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 Warsaw typically reaches 9, which falls under the very high exposure category.

Data source: Warsaw 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 Warsaw Compares to Other Months

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

This table compares monthly weather conditions in Warsaw, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	57 mm (2.3 inches)	81%	moderate
February Weather	-1°C (30°F)	57 mm (2.3 inches)	81%	moderate
March Weather	6°C (43°F)	107 mm (4.2 inches)	81%	high
April Weather	11°C (52°F)	99 mm (3.9 inches)	82%	very high
May Weather	18°C (65°F)	172 mm (6.8 inches)	78%	very high
June Weather	24°C (76°F)	108 mm (4.2 inches)	81%	extreme
July Weather	26°C (79°F)	88 mm (3.5 inches)	79%	very high
August Weather	24°C (76°F)	91 mm (3.6 inches)	77%	very high
September Weather	21°C (71°F)	93 mm (3.7 inches)	78%	very high
October Weather	13°C (56°F)	110 mm (4.3 inches)	78%	high
November Weather	5°C (42°F)	50 mm (2.0 inches)	87%	moderate
December Weather	2°C (35°F)	41 mm (1.6 inches)	84%	low