October weather forecast
Alajuela, Costa Rica

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Contents

October

Weather in October

October in Alajuela, Costa Rica, faces a continuation of the weather patterns witnessed in September, albeit with some noteworthy deviations. A further decline in temperatures, as well as in daylight hours, coincide with the progression of the year. Rainfall peaks during October, with an impressive total of 421mm (16.57") spread over 30.5 days, making it Alajuela's wettest month. This surge in precipitation aligns with an increase in cloud coverage and relative humidity. However, the UV index holds its ground despite the shorter, more overcast days.

Temperature

The coldest time of the year is October, with temperatures averaging a high of 23.8°C (74.8°F) and a low of 17.5°C (63.5°F).

Humidity

With an average relative humidity of 90%, October is the most humid month.

Rainfall

October is the month with the most rainfall. Rain falls for 30.5 days and accumulates 421mm (16.57") of precipitation.

Daylight

In October, the average length of the day is 11h and 53min.
On the first day of October, sunrise is at 05:26 and sunset at 17:28. On the last day of the month, sunrise is at 05:28 and sunset at 17:14 CST.

Sunshine

October has the least sunshine of the year, with an average of 6.2h of sunshine.

UV index

January, February, May 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 health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 5 during October leads to these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Aug 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?
October, known for its average high temperature of 23.8°C (74.8°F) and an average low temperature of 17.5°C (63.5°F), is the coldest month.
What is the usual temperature for Alajuela in October?
The average high-temperature and low-temperature during October are 23.8°C (74.8°F) and 17.5°C (63.5°F) respectively. In April, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is appraised at 31°C (87.8°F).
What is the most humid month?
October is the most humid month, with an average relative humidity of 90%.
What is the average humidity in October?
The average relative humidity in October is 90%.
What is the wettest month in Alajuela?
October is the month with the most rainfall. Rain falls for 30.5 days and accumulates 421mm (16.57") of precipitation.
How much does it rain in October?
In Alajuela, during October, the rain falls for 30.5 days and regularly aggregates up to 421mm (16.57") of precipitation.
How many hours of daylight does Alajuela have in October?
In October, the average day length is 11h and 53min.
What time are sunrise and sunset in October?
On the first day of October, sunrise is at 05:26 and sunset at 17:28. On the last day of the month, sunrise is at 05:28 and sunset at 17:14 CST.
What is the month with the least sunshine?
With an average of 6.2h of sunshine, October has the least sunshine of the year.
How many hours of sunshine does Alajuela have in October?
In October, the average sunshine duration in Alajuela is 6.2h.
What are the months with the lowest UV index?
January, February, May through December, with an average maximum UV index of 5, are months with the lowest UV index.
How high is the UV index in October?
The average daily maximum UV index in October is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND
Sep
October
Nov
Average high temperature
24.5°C
23.8°C
24.5°C
Average low temperature
17.5°C
17.5°C
16.5°C
Average pressure
1011mbar
1010.8mbar
1011mbar
Average wind speed
3.9km/h
4.2km/h
6.4km/h
Average max. wind speed
4.2km/h
4.5km/h
6.8km/h
Average wind speed gusts
6.3km/h
6.7km/h
10.4km/h
Average humidity
89%
90%
87%
Average rainfall
321mm
421mm
169mm
Average rainfall days
29.3
30.5
28.2
Average daylight
12h 1min
11h 5min
11h 4min
Average sunshine
7h 0min
6h 1min
6h 5min
Average sunshine days
0.4
0.5
1.4
Average UV index
5
5
5
Average cloud cover
59%
62%
55%
Average visibility
6km
6km
7km
Average temperature in October
Alajuela, Costa Rica
  • Average high temperature in October: 23.8°C

The warmest month (with the highest average high temperature) is April (28°C).
The month with the lowest average high temperature is October (23.8°C).

  • Average low temperature in October: 17.5°C

The month with the highest average low temperature is May (18.3°C).
The coldest month (with the lowest average low temperature) is January (15.2°C).

Average pressure in October
Alajuela, Costa Rica
  • Average pressure in October: 1010.8mbar

The month with the highest atmospheric pressure is January (1012.2mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).

Average wind speed in October
Alajuela, Costa Rica
  • Average wind speed in October: 4.2km/h

The windiest month (with the highest average wind speed) is February (10.9km/h).
The calmest month (with the lowest average wind speed) is September (3.9km/h).

Average humidity in October
Alajuela, Costa Rica
  • Average humidity in October: 90%

The month with the highest relative humidity is October (90%).
The month with the lowest relative humidity is March (71%).

Average rainfall in October
Alajuela, Costa Rica
  • Average rainfall in October: 421mm

The wettest month (with the highest rainfall) is October (421mm).
The driest month (with the least rainfall) is February (25mm).

Average rainfall days in October
Alajuela, 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 (12.3 days).

Average daylight in October /
Average sunshine in October
Alajuela, 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 30min).

  • Average sunshine in October: 6h and 1min

The month with the most sunshine is February (Average sunshine: 9h and 24min).
The month with the least sunshine is October (Average sunshine: 6h and 12min).

Average sunshine days in October
Alajuela, Costa Rica
  • Average sunshine days in October: 0.5 days

The month with the most sunshine days is February (11.9 days).
The month with the least sunshine days is September (0.4 days).

Average UV index in October
Alajuela, Costa Rica
  • Average UV index in October: 5

The months with the highest UV index are March and April (UV index 6).
The months with the lowest UV index are January, February, May, June, July, August, September, October, November and December (UV index 5).

Average cloud cover in October
Alajuela, Costa Rica
  • Average cloud cover in October: 62

The month with the most cloud cover is October (Cloud cover 62).
The month with the least cloud cover is February (Cloud cover 23).

Average visibility in October
Alajuela, Costa Rica
  • Average visibility in October: 6km

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

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