El Tunco weather in May
May in El Tunco: sweltering, soaked, with muggy air — fine if you can take 23 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#8 of 12 months in El Tunco · #938 of 1413 destinations to visit in May · comfort 74/100 (tier B)
- Days
- 31°C
- Nights
- 25°C
- Wet days
- 23
- Sun
- 11 h
- Humidity
- 82%
- Daylight
- 13 h
Traveller notes on El Tunco in May
Other months in El Tunco
El Tunco-focused surf guides call December and January the pick of the year: the region's soggier months have just ended, so it's dry-season sunshine and low crowds by Central American standards, with swell still consistent enough to keep the reef breaks at El Sunzal working most days. Waves run a touch smaller than the peak swell months, but clean rather than blown-out, and the water stays warm enough that a rash guard covers it for most visitors. The trade-off for the good weather is a busier stretch right around Christmas and New Year, when domestic tourists from San Salvador fill the town's hostels and beachfront bars. Outside that holiday spike, regulars describe December as close to the year's most reliable combination of sun, manageable waves, and thin crowds. The record: 30.9C days feeling like a sticky 35C, 23.1C nights, just 9.2mm across 2.2 days, a 29C sea, 68 percent humidity and 10.3 hours of sun.
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El Tunco climate normals — May
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in El Tunco in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySouth swell season(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for El Tunco's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherEl Tunco's weather peaks December–February, best around January.
Best weatherFair weatherToughest weather
What's on in El Tunco in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
South swell season
15 Mar – 31 Oct · usuallySurf seasonCrowdedSouthern-hemisphere swells light up the point breaks at Sunzal, El Tunco and Punta Roca almost daily. The rain arrives with it but mostly in the afternoon, so the dawn session stays clean and the town empties out at midday. Source ↗
Nearby, and something's on
Within 300 km of El Tunco — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is El Tunco?
El Tunco in May — FAQ
- Is May a good time to visit El Tunco?
- May in El Tunco: sweltering, soaked, with muggy air — fine if you can take 23 rainy days. It ranks #8 of 12 months for El Tunco on SeasonMap's comfort score (74/100).
- What is the weather like in El Tunco in May?
- In May, El Tunco averages a daily high of 30.6°C and a low of 24.8°C, with about 194.2 mm of rain over roughly 23.4 rainy days.
- What is the air quality in El Tunco in May?
- El Tunco has a mean US Air Quality Index of about 76 in May.
Within 300 km: Antigua Guatemala's Corpus Christi carpets around 21 May – 27 Jun.