nomadseason

October Weather in San Miguel, Costa Rica

Last updated: August 23, 2025

In San Miguel, Costa Rica, the average temperature in October hovers around 18°C (64°F), with a comfortable range from a minimum of 13°C (55°F) to a pleasant maximum of 24°C (76°F). This month also sees considerable precipitation, with an average of 601 mm (23.7 in) spread over 30 days. Alongside this, the average humidity sits at a notable 80%, creating a distinctly lush and vibrant atmosphere.

October Temperature in San Miguel

In October in San Miguel, the average temperature is 18°C (64°F). Maximums can reach 24°C (76°F), and minimums can be as low as 13°C (55°F). This pleasant climate makes San Miguel an ideal destination for travelers looking to explore while enjoying comfortable weather.

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

The chart illustrates October temperature patterns in San Miguel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Miguel, October typically has an average temperature of 18°C (64°F), with highs reaching up to 24°C (76°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec636464656565656564646463
Data source: Temperature data for San Miguel generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in San Miguel

In San Miguel in October, the precipitation amount is 601 mm (23.7 in) over the course of 30 days.

October Precipitation Trends in San Miguel

The chart displays monthly precipitation patterns in San Miguel, 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 Miguel, October typically receives around 601 mm (23.7 inches) of precipitation spread over approximately 30 days.
JanFebMarAprMayJunJulAugSepOctNovDec35192815553239931540350860127278
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in San Miguel

In San Miguel in October humidity is 80%. With an average temperature of 18°C (64°F), this humidity feels like a warm, damp blanket wrapping around you, making travel a bit more exhausting as the air thickens and the heat clings to your skin.

October Average Humidity in San Miguel

This chart illustrates the average monthly humidity levels in San Miguel, 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 Miguel is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec68%68%66%67%69%84%85%82%81%80%80%73%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in San Miguel

In San Miguel in October, 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 Miguel, you can check here.

Maximum UV Index Levels in San Miguel for October

The chart shows the monthly maximum UV Index (UVI) for San Miguel 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 Miguel typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121415161514151414141211
Data source: San Miguel 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 Miguel Compares to Other Months

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

This table compares monthly weather conditions in San Miguel, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)35 mm (1.4 inches)68%extreme
February Weather18°C (64°F)19 mm (0.8 inches)68%extreme
March Weather18°C (65°F)28 mm (1.1 inches)66%extreme
April Weather18°C (65°F)155 mm (6.1 inches)67%extreme
May Weather18°C (65°F)532 mm (21.0 inches)69%extreme
June Weather18°C (66°F)399 mm (15.7 inches)84%extreme
July Weather18°C (65°F)315 mm (12.4 inches)85%extreme
August Weather18°C (65°F)403 mm (15.9 inches)82%extreme
September Weather18°C (65°F)508 mm (20.0 inches)81%extreme
October Weather18°C (64°F)601 mm (23.7 inches)80%extreme
November Weather18°C (64°F)272 mm (10.7 inches)80%extreme
December Weather17°C (64°F)78 mm (3.1 inches)72%extreme

Compare San Miguel's Climate with Cities Worldwide