We should not talk about seasons when referring to the costarrican weather. Because actually temperature does not change from time to time in the year… Well! It does, but just a couple of degrees, nothing worth mentioning. Now, when it comes to regions… it does change! A lot!
Costa Rica is about the size of West Virginia… 21,000 square miles more or less. And being his little, has so many different climates it seems very crazy at times.
We do have to understand that this is the tropics, the worst challenge for any weather man! There are no forecasts that are totaly accurate, and with the Earth changing climate nowadays much less! But, we will give it a try!
In order to understand what can you expect and when is the best time of year to travel in order to see what you want to see, let´s start to break in months and areas:
January:
Caribbean: Rainy (It gets often cold fronts from the North and that turns into rain)
Sarapiqui and Arenal Volcano Area: Same as Caribbean.
Monteverde: Windy and it may drizzle a bit.
Guanacaste Mountains: Windy and it may drizzle a bit. Although it is mostly sunny.
Central Pacific: Sunny.
South Pacific: Sunny.
Central Valley: Very mixed. Windy, a bit of drizzle and fresh, sunny at times.
February:
Caribbean: Rainy (It gets often cold fronts from the North and that turns into rain)
Sarapiqui and Arenal Volcano Area: Same as Caribbean.
Monteverde: Sunny
Guanacaste Mountains: Sunny.
Central Pacific: Sunny.
South Pacific: Sunny.
Central Valley: Sunny.
March:
Caribbean: Sunny
Sarapiqui and Arenal Volcano Area: Sunny
Monteverde: Sunny
Guanacaste Mountains: Sunny.
Central Pacific: Sunny.
South Pacific: Sunny.
Central Valley: Sunny.
April:
Caribbean: Sunny
Sarapiqui and Arenal Volcano Area: Sunny
Monteverde: Sunny
Guanacaste Mountains: Sunny.
Central Pacific: Sunny.
South Pacific: Sunny.
Central Valley: Sunny.
May:
Caribbean: First two weeks is sunny, second half can rain part of the day.
Sarapiqui and Arenal Volcano Area: First two weeks is sunny, second half can rain part of the day
Monteverde: First two weeks is sunny, second half can rain part of the day}
Guanacaste Mountains: Sunny.
Central Pacific: Sunny.
South Pacific: First two weeks is sunny, second half can rain part of the day
Central Valley: First two weeks is sunny, second half can rain part of the day.
June:
Usually the last week is sunny throughout the country.
Caribbean: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Sarapiqui and Arenal Volcano Area:Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Monteverde:Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Guanacaste Mountains: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Central Pacific: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
South Pacific: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Central Valley: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
July:
Usually the first week is quite sunny throughout the country.
Caribbean: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Sarapiqui and Arenal Volcano Area:Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Monteverde:Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Guanacaste Mountains: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Central Pacific: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
South Pacific: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Central Valley: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
August:
Caribbean: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Sarapiqui and Arenal Volcano Area:Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Monteverde:Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Guanacaste Mountains: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Central Pacific: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
South Pacific: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
Central Valley: Rains every day, half the day. Either in the mornings or in the afternoon. Rarely rains all day.
September:
Caribbean: Sunny
Sarapiqui and Arenal Volcano Area: Sunny (It may be rainy every now and then but it is mostly sunny).
Monteverde: Rainy
Guanacaste Mountains: Rainy
Central Pacific: Rainy
South Pacific: Rainy
Central Valley: Rainy
October
Caribbean: Sunny
Sarapiqui and Arenal Volcano Area: Sunny (It may be rainy every now and then but it is mostly sunny).
Monteverde: Rainy
Guanacaste Mountains: Rainy
Central Pacific: Rainy
South Pacific: Rainy
Central Valley: Rainy
November
Caribbean: Rainy
Sarapiqui and Arenal Volcano Area: Rainy
Monteverde: Mostly sunny, although there might be showers every now and then.
Guanacaste Mountains: Mostly sunny, although there might be showers every now and then.
Central Pacific: Mostly sunny, although there might be showers every now and then.
South Pacific: Mostly sunny, although there might be showers every now and then.
Central Valley: Mostly sunny, although there might be showers every now and then.
December:
Caribbean: Rainy (It gets often cold fronts from the North and that turns into rain)
Sarapiqui and Arenal Volcano Area: Same as Caribbean.
Monteverde: Sunny and can be windy at the end of the month.
Guanacaste Mountains: Sunny.
Central Pacific: Sunny.
South Pacific: Sunny.
Central Valley: Sunny.
