October weather forecast
San José, Costa Rica

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

Weather in October

October, the same as September, in San José, Costa Rica, is an agreeable autumn month, with average temperature varying between 16.1°C (61°F) and 22.4°C (72.3°F).

Temperature

With an average high-temperature of 22.4°C (72.3°F) and an average low-temperature of 16.1°C (61°F), October is the coldest month.

Humidity

Months with the highest humidity in San José are September and October, with an average relative humidity of 91%.

Rainfall

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

Daylight

In San José, Costa Rica, the average length of the day in October is 11.9h.

Sunshine

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

UV index

Months with the highest UV index are January through December, with an average maximum UV index of 5. January through December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 5 in October transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the coldest month in San José?

With an average high-temperature of 22.4°C (72.3°F) and an average low-temperature of 16.1°C (61°F), October is the coldest month.

What is the most humid month in San José?

Months with the highest humidity in San José are September and October, with an average relative humidity of 91%.

What is the average humidity in October in San José?

The average relative humidity in October in San José, Costa Rica, is 91%.

What is the wettest month in San José?

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

How much does it rain in San José in October?

In San José, in October, it is raining for 30.5 days, with typically 438mm (17.24") of accumulated precipitation.

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

In October, the average length of the day in San José, Costa Rica, is 11.9h.

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.

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

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

What is the month with 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.

What are the months with the lowest UV index in San José?

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?

The average daily maximum UV index in October in San José, Costa Rica, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

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%

Months with the highest relative humidity are September and October (91%).
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: 11.9h

The month with the longest days is June (Average daylight: 12.7h).
Months with the shortest days are January and December (Average daylight: 11.6h).

  • Average sunshine in October: 5.8h

The month with the most sunshine is February (Average sunshine: 9.2h).
The month with the least sunshine is October (Average sunshine: 5.8h).

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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

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

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

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