Costa RicaAverage weather for Guanacaste in May
It's hot in May in Guanacaste with an average temperature of 34°C. Temperatures this month range from a low of 32°C to a high of 35°C. At night, you can expect temperatures between 23°C and 24°C.
Start of May
The month of May starts in Guanacaste with hot temps, averaging around 35°C during the day and nights around 24°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid May
By mid-May, daytime temps drop to around 34°C, with nights around 24°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of May
By the end of May, the average daytime temperature in Guanacaste is around 33°C, while nighttime temps are about 24°C. There’s a significant chance of many days with precipitation. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In May, there is an average of 206 mm of precipitation, spread over 12 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Guanacaste in May |
New York | ||
|---|---|---|---|
 Average temperature |
34°C | 22°C | |
 Max. temperature |
35°C | 28°C | |
| Min. temperature |
32°C | -5°C | |
 Total precipitation |
206 mm | 105 mm | |
| Rainy days |
12 days | 14 days | |
April
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is May a good time to visit Guanacaste?
Looking for sun? May isn’t a good month to be in Guanacaste. The temperature is nice, but there’s too much chance of rain.
The hurricane season in Guanacaste runs from June to November.
Temperature records
With 38°C in 2019, Guanacaste reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 24°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 19°C to a highest value of 28°C.
Check out the climate of Guanacaste for all months and discover the best travel time
Daily Temperature in May in Guanacaste
This chart shows the average daily high and low temperatures in May for Guanacaste, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in May in Guanacaste
The chart below shows the average daily precipitation in May for Guanacaste, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for May, you can expect about 12 days of precipitation in Guanacaste.
Daily UV index in May in Guanacaste
This chart shows the average daily UV index in May in Guanacaste, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in Guanacaste over the years
This chart shows the average temperature in May in Guanacaste, measured in degrees Celsius, over the past few years.
Total precipitation in May in Guanacaste over the years
This chart shows the average precipitation in May in Guanacaste, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in May for Guanacaste
Click on any day in May to get detailed info about the usual weather on that day in Guanacaste. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Guanacaste
Have you been to Guanacaste in May?
Share your weather experience in May in Guanacaste.
Average weather in Guanacaste by month
Click on a month below to see detailed weather info for Guanacaste. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Guanacaste for all months at once
