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May Weather in South Pasadena, United States

Last updated: June 24, 2025

In South Pasadena, United States, the average temperature in May hovers around 19°C (66°F). Expect minimums as low as 9°C (48°F) and maximums soaring up to 35°C (96°F). During this time, precipitation is light, with a total of 12 mm (0.5 in) spread over 3 days, and the average humidity remains at a comfortable 70%.

May Temperature in South Pasadena

In May in South Pasadena, the average temperature is 19°C (66°F). Maximum temperatures can reach 35°C (96°F), while minimum temperatures can drop as low as 9°C (48°F). Overall, this makes South Pasadena a great destination for travelers seeking mild weather with the possibility of warm days and cooler evenings.

May Weather in South Pasadena: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in South Pasadena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Pasadena, May typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (96°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec565759646570757674706356
Data source: Temperature data for South Pasadena generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in South Pasadena

In South Pasadena in May, the precipitation amount is 12 mm (0.5 in) during a span of 3 days.

May Precipitation Trends in South Pasadena

The chart displays monthly precipitation patterns in South Pasadena, 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 South Pasadena, May typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec7155701912322381876
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in South Pasadena

In South Pasadena in May humidity is 70%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket enveloping you, making travel a bit sticky and prompting frequent breaks for water as you explore the sights.

May Average Humidity in South Pasadena

This chart illustrates the average monthly humidity levels in South Pasadena, 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 South Pasadena is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in South Pasadena

In South Pasadena 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 South Pasadena.

Maximum UV Index Levels in South Pasadena for May

The chart shows the monthly maximum UV Index (UVI) for South Pasadena 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 South Pasadena typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46891011111010754
Data source: South Pasadena 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 South Pasadena Compares to Other Months

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

This table compares monthly weather conditions in South Pasadena, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (57°F)71 mm (2.8 inches)74%moderate
February Weather14°C (57°F)55 mm (2.2 inches)79%high
March Weather15°C (59°F)70 mm (2.8 inches)75%very high
April Weather18°C (64°F)19 mm (0.7 inches)70%very high
May Weather19°C (66°F)12 mm (0.5 inches)70%very high
June Weather21°C (70°F)3 mm (0.1 inches)72%extreme
July Weather24°C (75°F)2 mm (0.1 inches)73%extreme
August Weather24°C (76°F)2 mm (0.1 inches)69%very high
September Weather23°C (74°F)3 mm (0.1 inches)68%very high
October Weather21°C (70°F)8 mm (0.3 inches)67%high
November Weather17°C (63°F)17 mm (0.7 inches)68%moderate
December Weather13°C (57°F)76 mm (3.0 inches)71%moderate

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