SeasonMapCon Dao (Con Son) weather in May
Vietnam
May in Con Dao: warm, soaked, with clean air — fine if you can take 22 rainy days.
#6 of 12 months in Con Dao · #895 of 1383 destinations to visit in May · comfort 75/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Con Dao in May
No notes yet. Open Con Dao on the map to add the first one.
Con Dao climate normals — May
| Daytime high | 29°C / 83°F | 🌤 warm |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Sea temperature | 30°C / 86°F | ♨️ bath-warm |
| Rainfall | 188 mm / 7.4 in | ⛈ soaked |
| Rainy days | 22 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 10.4 h/day | |
| Daylight | 12.5 h | |
| Wind | 23 km/h / 14 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Con Dao 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.
BusyReunification Day holidays, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Con Dao'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 weatherCon Dao's weather peaks February–April, best around March.
Best weatherFair weatherToughest weather
What's on in Con Dao in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Calm seas and clear water
1 Mar – 30 Jun · usuallyDive seasonBetween the two monsoons the crossing settles and the water over the reef clears. These are the weeks the dive boats actually reach the outer islands instead of turning back at the headland.
- Nature
Sea turtle nesting
15 Apr – 31 Oct · usuallyBook earlyGreen turtles come ashore on Bay Canh and the smaller islets, most of them between May and October. The national park runs overnight ranger trips and hatchling releases, and the places on them are limited. Source ↗
- Holiday
Reunification Day holidays
30 Apr – 3 MayNational holidayCrowdedBook earlyFour days off across the country, and Con Dao is one of the places the mainland flies to. Rooms and the Con Son flights go early and cost more than at any other point in the year. Source ↗
Nearby, and something's on
Within 300 km of Con Dao — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Con Dao?
Con Dao in May — FAQ
- Is May a good time to visit Con Dao?
- May in Con Dao: warm, soaked, with clean air — fine if you can take 22 rainy days. It ranks #6 of 12 months for Con Dao on SeasonMap's comfort score (75/100).
- What is the weather like in Con Dao in May?
- In May, Con Dao averages a daily high of 28.6°C and a low of 26.8°C, with about 188.4 mm of rain over roughly 22.4 rainy days.
- What is the air quality in Con Dao in May?
- Con Dao has a mean US Air Quality Index of about 38 in May.
Other months in Con Dao
Compare Con Dao in May
Warmer or cooler than Con Dao in May
Similar destinations in Southeast Asia — May
Within 300 km: Ho Chi Minh City's Reunification Day and May Day on 30 Apr – 1 May.