Panajachel (Lake Atitlán) weather in May
May in Panajachel: warm, soaked, with muggy air — a gamble, with 28 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#10 of 12 months in Panajachel · #1150 of 1413 destinations to visit in May · comfort 62/100 (tier C)
- Days
- 24°C
- Nights
- 18°C
- Wet days
- 28
- Sun
- 10.4 h
- Humidity
- 84%
- Daylight
- 13 h

Traveller notes on Panajachel in May
Notes from nearby Lake Atitlán (8 km away)
Panajachel doesn't have its own notes for May yet — these are about Lake Atitlán, close enough to share the season.
Lake Atitlan-forum threads on May weather for Antigua and the lake describe mornings as typically clear, real rain more likely by afternoon or evening as the month progresses toward the rainy season. Regulars call a rain jacket worth packing regardless of how clear the morning sky looks, conditions shifting fast once cloud builds. Posters describe May as genuinely transitional, some days sunny throughout while others bring real cloud and rain in roughly equal measure, a single day hard to predict. Regulars call the lake still a striking sight in this shoulder-season stretch, warm daytime temperatures a real upside regardless of an occasional shower. Posters recommend real layers for the evening chill at this elevation, comfortable warmth fading fast once the sun drops. Regulars call May a reasonable window for anyone flexible about an afternoon system. The record: 24.2C days feeling like 28C, 18.3C nights, an extraordinarily high 375.6mm across nearly 28 days and 84 percent humidity.
Other months in Panajachel
Lake Atitlán/Panajachel forum threads describe August as a genuine mixed bag - some stretches bring very little rain for weeks, other times it rains most afternoons for an hour or two, with tropical-storm-driven multi-day rain the real exception rather than the norm. The typical daily pattern posters described: gorgeous mornings, then a chance of rain arriving after around 2pm, sometimes hard but usually brief. Crucially, several regulars pointed out it's never oppressively hot here even in the rainy season, since the lake's highland elevation keeps temperatures moderate regardless of rainfall - a rain jacket was the standard packing tip rather than heat gear.
Forum posters describe a consistent daily pattern here in February: warm enough for short sleeves and shorts by day, cooling to genuine sweater weather once the sun goes down - a real day-to-night swing typical of this lake's elevation. February sits squarely in the dry season, with posters noting humidity stays low enough that air conditioning generally isn't needed. Rain isn't common this time of year but does occasionally happen, and posters mention an occasional cold front can push daytime temperatures down enough to want a sweater even before evening. Overall, posters consistently rate February among the more comfortable, predictable months for exploring Panajachel and the villages around Lake Atitlan.
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Panajachel climate normals — May
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Panajachel 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.
Quietone of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Panajachel'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).
Toughest weatherPanajachel's weather peaks December–February, best around January.
Best weatherFair weatherToughest weather
What's on in Panajachel in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
The Xocomil
1 Jan – 31 DecWind seasonRiskWarm Pacific air meeting cold air off the highlands raises the Xocomil across Atitlán from late morning most days, hard enough to turn a boat over. Cross to San Pedro or Santiago early and be back before the afternoon. Source ↗
- Season
Wet season
MonsoonRisk28 rainy days and about 376 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of Panajachel — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Panajachel?
Panajachel in May — FAQ
- Is May a good time to visit Panajachel?
- May in Panajachel: warm, soaked, with muggy air — a gamble, with 28 rainy days. It ranks #10 of 12 months for Panajachel on SeasonMap's comfort score (62/100).
- What is the weather like in Panajachel in May?
- In May, Panajachel averages a daily high of 24°C and a low of 18.2°C, with about 375.6 mm of rain over roughly 27.5 rainy days.
- What is the air quality in Panajachel in May?
- Panajachel has a mean US Air Quality Index of about 91 in May.
Within 300 km: Antigua Guatemala's Corpus Christi carpets around 21 May – 27 Jun.