June Weather in San Jose, United States

Last updated: June 24, 2025

In June, the average temperature in San Jose, United States reaches a warm 30°C (86°F), with the mercury dipping to a minimum of 14°C (58°F) and soaring to a maximum of 42°C (108°F). Precipitation is minimal, with just 4 mm (0.2 in) recorded over 0 days, while the average humidity rests at a comfortable 37%. Enjoy the warm and dry weather of this vibrant location!

June Temperature in San Jose

In June in San Jose, the average temperature is 30°C (86°F). Maximums can reach 42°C (108°F), while minimums can drop as low as 14°C (58°F). Be sure to pack both light clothing for the heat and layers for cooler evenings when traveling.

June Weather in San Jose: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in San Jose, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Jose, June typically has an average temperature of 30°C (86°F), with highs reaching up to 42°C (108°F) and lows dropping to around 14°C (58°F).

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

June Precipitation in San Jose

In San Jose in June, the precipitation amount is 4 mm (0.2 in) over the course of 0 days.

June Precipitation Trends in San Jose

The chart displays monthly precipitation patterns in San Jose, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In San Jose, June typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

June Humidity in San Jose

In San Jose in June, humidity is 37%. With an average temperature of 30°C (86°F), this humidity feels like a warm, gentle embrace, making travel enjoyable but requiring occasional breaks in the shade to stay refreshed.

June Average Humidity in San Jose

This chart illustrates the average monthly humidity levels in San Jose, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in San Jose is approximately 37%, offering insight into how humid the weather typically is during this month.

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

June UV Index in San Jose

In San Jose in June, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Jose.

Maximum UV Index Levels in San Jose for June

The chart shows the monthly maximum UV Index (UVI) for San Jose in June, 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 June, the maximum UV index in San Jose typically reaches 12, which falls under the extreme exposure category.

Data source: San Jose June 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 June Weather in San Jose Compares to Other Months

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

This table compares monthly weather conditions in San Jose, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	23 mm (0.9 inches)	81%	moderate
February Weather	10°C (50°F)	32 mm (1.2 inches)	82%	high
March Weather	15°C (59°F)	16 mm (0.6 inches)	68%	very high
April Weather	20°C (68°F)	2 mm (0.1 inches)	55%	extreme
May Weather	24°C (76°F)	3 mm (0.1 inches)	45%	extreme
June Weather	30°C (86°F)	4 mm (0.2 inches)	37%	extreme
July Weather	30°C (86°F)	45 mm (1.8 inches)	43%	extreme
August Weather	29°C (85°F)	22 mm (0.9 inches)	53%	extreme
September Weather	26°C (79°F)	28 mm (1.1 inches)	66%	extreme
October Weather	20°C (68°F)	13 mm (0.5 inches)	72%	very high
November Weather	14°C (58°F)	20 mm (0.8 inches)	81%	high
December Weather	9°C (48°F)	25 mm (1.0 inches)	84%	moderate