May Weather in Manteca, United States

Last updated: June 24, 2025

In Manteca, United States, the average temperature in May is a pleasant 20°C (69°F). However, be prepared for a temperature range that can dip as low as 6°C (44°F) and soar to a sizzling 40°C (105°F). During this month, expect about 16 mm (0.6 in) of precipitation over the course of 2 days, while the average humidity sits at a comfortable 71%. Enjoy the varied weather!

May Temperature in Manteca

In May in Manteca, the average temperature is 20°C (69°F). Maximum temperatures can reach up to 40°C (105°F), while minimums can drop to as low as 6°C (44°F). This climate makes Manteca an ideal destination for travelers looking to enjoy both warm days and cool evenings.

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

The chart illustrates May temperature patterns in Manteca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Manteca, May typically has an average temperature of 20°C (69°F), with highs reaching up to 40°C (105°F) and lows dropping to around 6°C (44°F).

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

May Precipitation in Manteca

In Manteca in May, the precipitation amount is 16 mm (0.6 in) over a period of 2 days.

May Precipitation Trends in Manteca

The chart displays monthly precipitation patterns in Manteca, 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 Manteca, May typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 2 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 Manteca

In Manteca in May, humidity is 71%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket that can quickly lead to discomfort for travelers. Staying hydrated and taking breaks in shaded areas becomes essential to enjoy sightseeing without feeling fatigued.

May Average Humidity in Manteca

This chart illustrates the average monthly humidity levels in Manteca, 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 Manteca 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 Manteca

In Manteca 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 Manteca.

Maximum UV Index Levels in Manteca for May

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

Data source: Manteca 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 Manteca Compares to Other Months

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

This table compares monthly weather conditions in Manteca, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	92 mm (3.6 inches)	82%	moderate
February Weather	11°C (53°F)	73 mm (2.9 inches)	84%	moderate
March Weather	13°C (56°F)	75 mm (3.0 inches)	82%	very high
April Weather	17°C (63°F)	34 mm (1.3 inches)	78%	very high
May Weather	20°C (69°F)	16 mm (0.6 inches)	71%	very high
June Weather	25°C (76°F)	1 mm (0.1 inches)	64%	extreme
July Weather	26°C (79°F)	0 mm (0.0 inches)	58%	extreme
August Weather	25°C (78°F)	0 mm (0.0 inches)	54%	very high
September Weather	23°C (74°F)	2 mm (0.1 inches)	55%	very high
October Weather	18°C (65°F)	21 mm (0.8 inches)	62%	high
November Weather	13°C (56°F)	33 mm (1.3 inches)	78%	moderate
December Weather	10°C (50°F)	78 mm (3.1 inches)	80%	moderate