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October Weather in San Sebastian, Guatemala

Last updated: August 23, 2025

In October, the average temperature in San Sebastian, Guatemala hovers around 26°C (79°F), offering a warm yet pleasant climate. Expect a minimum of 22°C (71°F) and highs reaching up to 33°C (92°F). However, prepare for some dampness, as the region receives 378 mm (14.9 in) of precipitation spread across 29 days, with an average humidity of 83%.

October Temperature in San Sebastian

In October in San Sebastian, the average temperature is 26°C (79°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 22°C (71°F). This pleasant climate makes it an ideal time for travelers to explore the outdoor attractions and enjoy the local scenery.

October Weather in San Sebastian: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in San Sebastian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Sebastian, October typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (92°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec798082828180818079798079
Data source: Temperature data for San Sebastian 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.

October Precipitation in San Sebastian

In San Sebastian in October, the total precipitation amount reaches 378 mm (14.9 in) spread over 29 days.

October Precipitation Trends in San Sebastian

The chart displays monthly precipitation patterns in San Sebastian, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In San Sebastian, October typically receives around 378 mm (14.9 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec24184410544737329236241837810626
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in San Sebastian

In San Sebastian in October, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

October Average Humidity in San Sebastian

This chart illustrates the average monthly humidity levels in San Sebastian, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in San Sebastian is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in San Sebastian

In San Sebastian in October, 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 Sebastian.

Maximum UV Index Levels in San Sebastian for October

The chart shows the monthly maximum UV Index (UVI) for San Sebastian in October, 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 October, the maximum UV index in San Sebastian typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1011131413131312131299
Data source: San Sebastian October 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 October Weather in San Sebastian Compares to Other Months

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

This table compares monthly weather conditions in San Sebastian, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)24 mm (1.0 inches)76%very high
February Weather27°C (81°F)18 mm (0.7 inches)68%extreme
March Weather28°C (82°F)44 mm (1.7 inches)59%extreme
April Weather28°C (83°F)105 mm (4.1 inches)57%extreme
May Weather27°C (81°F)447 mm (17.6 inches)65%extreme
June Weather27°C (80°F)373 mm (14.7 inches)66%extreme
July Weather27°C (81°F)292 mm (11.5 inches)75%extreme
August Weather27°C (80°F)362 mm (14.3 inches)82%extreme
September Weather26°C (80°F)418 mm (16.5 inches)82%extreme
October Weather26°C (79°F)378 mm (14.9 inches)83%extreme
November Weather27°C (80°F)106 mm (4.2 inches)80%very high
December Weather26°C (80°F)26 mm (1.0 inches)76%very high

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