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September Weather in San Jose, Honduras

Last updated: August 23, 2025

In San Jose, Honduras, the average temperature in September is a pleasant 21°C (71°F), with a range that dips to a minimum of 14°C (58°F) and peaks at 31°C (88°F). Expect about 218 mm (8.6 in) of precipitation over approximately 23 days, contributing to a 71% humidity level. Embrace the warm, humid conditions as you explore!

September Temperature in San Jose

In September in San Jose, the average temperature is 21°C (71°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 14°C (58°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates September 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, September typically has an average temperature of 21°C (71°F), with highs reaching up to 31°C (88°F) and lows dropping to around 14°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec656870727271717171696765
Data source: Temperature data for San Jose 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.

September Precipitation in San Jose

In San Jose in September, the precipitation amount is 218 mm (8.6 in) during 23 days, indicating a relatively wet period for that time of year.

September Precipitation Trends in San Jose

The chart displays monthly precipitation patterns in San Jose, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In San Jose, September typically receives around 218 mm (8.6 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec128858251232931732182357119
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Jose

In San Jose in September humidity is 71%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making it important for travelers to stay hydrated and seek shade during the hottest parts of the day.

September Average Humidity in San Jose

This chart illustrates the average monthly humidity levels in San Jose, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in San Jose is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%72%61%53%51%52%58%63%71%79%79%74%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Jose

In San Jose in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Jose, you can check here.

Maximum UV Index Levels in San Jose for September

The chart shows the monthly maximum UV Index (UVI) for San Jose in September, 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 September, the maximum UV index in San Jose typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315151414141414131110
Data source: San Jose September 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 September 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 September’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 September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (66°F)12 mm (0.5 inches)80%extreme
February Weather20°C (68°F)8 mm (0.3 inches)72%extreme
March Weather21°C (70°F)8 mm (0.3 inches)61%extreme
April Weather22°C (73°F)58 mm (2.3 inches)53%extreme
May Weather22°C (72°F)251 mm (9.9 inches)51%extreme
June Weather22°C (71°F)232 mm (9.1 inches)52%extreme
July Weather22°C (71°F)93 mm (3.6 inches)58%extreme
August Weather22°C (71°F)173 mm (6.8 inches)63%extreme
September Weather21°C (71°F)218 mm (8.6 inches)71%extreme
October Weather21°C (70°F)235 mm (9.2 inches)79%extreme
November Weather19°C (67°F)71 mm (2.8 inches)79%extreme
December Weather19°C (66°F)19 mm (0.7 inches)74%very high

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