October weather forecast
San José, Costa Rica

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Skyscape of San José, Costa Rica in the evening sun
Skyscape of San José, Costa Rica in the evening sun

Weather in October

October brings the highest rainfall rate of the year to San José, with a heavy downpour amounting to 438mm (17.24"). As the year advances, temperatures retain their standard profile. Despite the heightened showers, the city's environment continues to thrive spectacularly. All things considered, October unfolds an unmatched spectacle in San José.

Temperature

October, known for its average high temperature of 22.4°C (72.3°F) and an average low temperature of 16.1°C (61°F), is the coldest month in San José.

Humidity

September and October, with an average relative humidity of 91%, are the most humid months in San José.

Rainfall

October is the month with the most rainfall. Rain falls for 30.5 days and accumulates 438mm (17.24") of precipitation.

Daylight

In October, the average length of the day is 11h and 54min.
On the first day of October in San José, sunrise is at 05:24 and sunset at 17:26. On the last day of the month, sunrise is at 05:26 and sunset at 17:13 CST.

Sunshine

October has the least sunshine of the year in San José, Costa Rica, with an average of 5.8h of sunshine.

UV index

The months with the highest UV index in San José are January through December, with an average maximum UV index of 5. The months with the lowest UV index in San José are January through December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 5 in October translates into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

What month is the coldest in San José?

October, characterized by an average high temperature of 22.4°C (72.3°F) and a low temperature of 16.1°C (61°F), is generally the coldest month in San José, Costa Rica.

What are the temperatures in San José in October?

The average high-temperature, in October, in San José, is 22.4°C (72.3°F), while the average low-temperature is 16.1°C (61°F).

What is the most humid month in San José?

The months with the highest humidity are September and October, with an average relative humidity of 91%.

What is the average humidity in October in San José?

In October, the average relative humidity is 91%.

What is the rainiest month in San José?

The month with the most rainfall in San José is October, when the rain falls for 30.5 days and typically aggregates up to 438mm (17.24") of precipitation.

How many days does it rain in October in San José?

In San José, in October, during 30.5 rainfall days, 438mm (17.24") of precipitation is typically accumulated.

How many hours of daylight does San José have in October?

The average day length in October is 11h and 54min.

When is the sunrise / sunset in October in San José?

In October, on the first day of the month, sunrise is at 05:24 and sunset at 17:26. On the last day of the month, in San José, sunrise is at 05:26 and sunset at 17:13 CST.

What is the month with the least sunshine in San José?

With an average of 5.8h of sunshine, October has the least sunshine of the year in San José.

How many hours of sunshine does San José have in October?

In San José, the average sunshine duration in October is 5.8h.

When is the highest UV index in San José?

January through December, with an average maximum UV index of 5, are months with the highest UV index in San José.

When is the lowest UV index in San José?

The months with the lowest UV index in San José are January through December, with an average maximum UV index of 5.

How high is the UV index in October in San José?

In San José, Costa Rica, the average daily maximum UV index in October is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.

Average temperature in October
San José, Costa Rica

Average temperature in October - San José, Costa Rica
  • Average high temperature in October: 22.4°C

The warmest month (with the highest average high temperature) is April (26°C).
The month with the lowest average high temperature is October (22.4°C).

  • Average low temperature in October: 16.1°C

The month with the highest average low temperature is June (17°C).
The coldest month (with the lowest average low temperature) is January (13.8°C).

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Average pressure in October
San José, Costa Rica

Average pressure in October - San José, Costa Rica
  • Average pressure in October: 1010.8mbar

The month with the highest atmospheric pressure is January (1012.3mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).

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Average wind speed in October
San José, Costa Rica

Average wind speed in October - San José, Costa Rica
  • Average wind speed in October: 4.4km/h

The windiest month (with the highest average wind speed) is February (10.7km/h).
The calmest month (with the lowest average wind speed) is September (4.3km/h).

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Average humidity in October
San José, Costa Rica

Average humidity in October - San José, Costa Rica
  • Average humidity in October: 91%

The months with the highest relative humidity are September and October (91%).
The months with the lowest relative humidity are February and March (75%).

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Average rainfall in October
San José, Costa Rica

Average rainfall in October - San José, Costa Rica
  • Average rainfall in October: 438mm

The wettest month (with the highest rainfall) is October (438mm).
The driest month (with the least rainfall) is February (26mm).

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Average rainfall days in October
San José, Costa Rica

Average rainfall days in October - San José, Costa Rica
  • Average rainfall days in October: 30.5 days

The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (12.2 days).

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Average daylight in October /
Average sunshine in October
San José, Costa Rica

Average daylight in October / Average sunshine in October - San José, Costa Rica
  • Average daylight in October: 11h and 5min

The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).

  • Average sunshine in October: 5h and 5min

The month with the most sunshine is February (Average sunshine: 9h and 12min).
The month with the least sunshine is October (Average sunshine: 5h and 48min).

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Average sunshine days in October
San José, Costa Rica

Average sunshine days in October - San José, Costa Rica
  • Average sunshine days in October: 0.4 days

The month with the most sunshine days is March (13.5 days).
The month with the least sunshine days is September (0.1 days).

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Average UV index in October
San José, Costa Rica

Average UV index in October - San José, Costa Rica
  • Average UV index in October: 5

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).

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Average cloud cover in October
San José, Costa Rica

Average cloud cover in October - San José, Costa Rica
  • Average cloud cover in October: 68

The month with the most cloud cover is October (Cloud cover 68).
The month with the least cloud cover is February (Cloud cover 30).

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Average visibility in October
San José, Costa Rica

Average visibility in October - San José, Costa Rica
  • Average visibility in October: 6km

The months with the highest visibility are January, February and March (9km).
The months with the lowest visibility are August, September, October and November (6km).

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San José, Costa Rica

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