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Weather in Guanacaste for May 2026

Your guide to Guanacaste weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Guanacaste at the beginning of May is 33.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 32.4 °C by the end of May.

    • Rain 🌧️

  • Guanacaste experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 301.2 mm.

Average dry days
2
Dry days
Average rainy days
29
Rainy days
Average snowy days
0
Snow days
Average temperatures
33°/25°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Guanacaste Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
35°
2
Patchy rain possible
34°
3
Moderate rain at times
33°
4
Heavy rain at times
32°
5
Patchy rain possible
33°
6
Patchy rain possible
34°
7
Moderate rain at times
34°
8
Moderate or heavy rain shower
32°
9
Moderate rain at times
35°
10
Moderate or heavy rain shower
33°
11
Moderate or heavy rain shower
33°
12
Moderate or heavy rain shower
34°
13
Moderate or heavy rain shower
33°
14
Moderate or heavy rain shower
33°
15
Moderate or heavy rain shower
31°
16
Moderate or heavy rain shower
31°
17
Moderate or heavy rain shower
31°
18
Patchy rain possible
32°
19
Moderate or heavy rain shower
32°
20
Patchy rain possible
33°
21
Moderate or heavy rain shower
33°
22
Moderate rain at times
33°
23
Moderate or heavy rain shower
32°
24
Moderate rain at times
31°
25
Moderate or heavy rain shower
32°
26
Moderate or heavy rain shower
33°
27
Moderate rain at times
33°
28
Moderate or heavy rain shower
33°
29
Moderate or heavy rain shower
33°
30
Moderate or heavy rain shower
31°
31
Light rain shower
32°

Temperatures trend during May in Guanacaste

See the weather trend as well as the moving average line

May weather in Guanacaste day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
 35° /24° 1.2 mm 8
2 May Patchy rain possible
Patchy rain possible
 34° /24° 2.1 mm 7
3 May Moderate rain at times
Moderate rain at times
 33° /25° 3.4 mm 7
4 May Heavy rain at times
Heavy rain at times
 32° /24° 11.5 mm 7
5 May Patchy rain possible
Patchy rain possible
 33° /25° 0.6 mm 8
6 May Patchy rain possible
Patchy rain possible
 34° /24° 0.7 mm 7
7 May Moderate rain at times
Moderate rain at times
 34° /25° 3.3 mm 8
8 May Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /25° 12.7 mm 7
9 May Moderate rain at times
Moderate rain at times
 35° /25° 3.9 mm 8
10 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /24° 8.2 mm 7
11 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /25° 3.3 mm 7
12 May Moderate or heavy rain shower
Moderate or heavy rain shower
 34° /25° 3.9 mm 7
13 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /25° 6.8 mm 7
14 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /25° 2.8 mm 7
15 May Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 9.9 mm 7
16 May Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 9 mm 7
17 May Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 26.1 mm 7
18 May Patchy rain possible
Patchy rain possible
 32° /24° 3.7 mm 7
19 May Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /24° 6.8 mm 7
20 May Patchy rain possible
Patchy rain possible
 33° /24° 6.5 mm 7
21 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /24° 1.8 mm 7
22 May Moderate rain at times
Moderate rain at times
 33° /24° 2 mm 7
23 May Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /24° 8.9 mm 7
24 May Moderate rain at times
Moderate rain at times
 31° /25° 1.3 mm 7
25 May Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /24° 4 mm 7
26 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /24° 12.4 mm 7
27 May Moderate rain at times
Moderate rain at times
 33° /24° 0.8 mm 7
28 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /24° 7.1 mm 7
29 May Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /24° 18.1 mm 7
30 May Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /23° 35.9 mm 7
31 May Light rain shower
Light rain shower
 32° /24° 7.3 mm 7
Next
Important Notice
Our weather forecast for Guanacaste in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Guanacaste forecast closer to your planned date for the most up-to-date weather information.
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Guanacaste in May - FAQ

What are the expected maximum and minimum temperatures in Guanacaste during May?
During May, expect a variety of temperatures with highs around 33° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Guanacaste during May?
Significant rainfall exceeding 301.2 mm is expected in Guanacaste during May, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Guanacaste during May?
The average wind speed in Guanacaste during May is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Guanacaste

Explore the daily rainfall trends and prepare for Guanacastes May weather 💧

UV exposure in Guanacaste during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

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Get accurate weather forecasts for Guanacaste, located at latitude 10.767 and longitude -85.647. Stay updated with localized weather information tailored for Guanacaste.

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