May in San José typically sees daytime highs of 37°C (99°F) and nighttime lows of 24°C (75°F). Rainfall is also possible this month, so it's worth packing an umbrella.
May in San José has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
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Pick a month to see the average temperature, rainfall and sunshine in San José - and find the best time to visit.
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 →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Get ready for hot weather in May! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
See the full San José climate overview or explore weather in Guatemala.
Where to go in May - average daytime high across popular destinations.
Flores
37°C (99°F) Rio Dulce Town
33°C (91°F) Lívingston33°C (91°F) Cobán28°C (82°F) Guatemala City28°C (82°F) Antigua Guatemala26°C (79°F) Quetzaltenango23°C (73°F) Panajachel23°C (73°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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