Retalhuleu Weather in May
In Retalhuleu, May brings very high daytime temperatures around 31°C (88°F), with nights cooling to 22°C (72°F). This month falls within the rainy season, so expect frequent rainfall.
Rainfall in Retalhuleu in May
As part of the rainy season, Retalhuleu sees around 15 days of rain in May, with an average of 413 mm (16 in). The rain this month falls heavily when it arrives. Late afternoons in particular can see strong showers, so waterproofs are worth keeping handy.
Temperature in Retalhuleu in May
In May, Retalhuleu gets very high temperatures, with highs of 31°C (88°F). Nights cool to around 22°C (72°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. With lows of 22°C (72°F), the nights are warm and generally comfortable.
Sunshine in Retalhuleu in May
Expect a lot of sunshine this month, with about 195 hours of sun. Showers typically arrive in the late afternoon or evening, keeping mornings and early afternoons sunny. Even during the wet season, there's plenty of sunshine for sightseeing.May in Retalhuleu has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Guatemala, check out our Retalhuleu's climate page.
Retalhuleu Temperature in May
Min Temperature
22°C (72°F)
Max Temperature
31°C (88°F)
Chance of Rain
49%
Precipitation
413 mm (16 in)
Rainy days
15 days
Humidity
81% *
Sunshine
195 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Retalhuleu typically stay consistent throughout May, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Retalhuleu in May
Browse day-by-day weather records for Retalhuleu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Retalhuleu historical weather extremes in May
According to our 24 years of weather records for Retalhuleu, the following extremes were recorded between 2002 and 2026.
- The warmest day in May was on May 4, 2003, with a maximum of 38°C (100°F).
- The coldest May day was on May 31, 2007, with a maximum of 26°C (79°F).
- Retalhuleu registered its coldest May night on May 8, 2009, with temperatures dropping to 12°C (54°F).
Best Places in Guatemala in May
Find out more about the weather in Guatemala and which places have the best travel conditions in this month. See all of Guatemala in May →
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What to Wear in Retalhuleu in May
Warm temperatures in May make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Retalhuleu in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Guatemala, check out our Retalhuleu's climate page.
Temperature Rainfall Sunshine Humidity
See the full Retalhuleu climate overview or explore weather in Guatemala.
