Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 23.2 °C | 18.7 °C | 1 day | Pleasant — a good time to go |
| February | 24 °C | 19 °C | 2 days | Pleasant — a good time to go |
| March | 26.1 °C | 19.6 °C | 1 day | Ideal — one of the best times of year |
| April | 28.5 °C | 21.4 °C | 0 day | Ideal — one of the best times of year |
| May | 30 °C | 24.1 °C | 0 day | Ideal — one of the best times of year |
| June | 33.7 °C | 27.5 °C | 0 day | Ideal — one of the best times of year |
| July | 34.7 °C | 29.9 °C | 3 days | Ideal — one of the best times of year |
| August | 34.6 °C | 30.8 °C | 7 days | Ideal — one of the best times of year |
| September | 33.5 °C | 30.4 °C | 6 days | Ideal — one of the best times of year |
| October | 32.1 °C | 28.5 °C | 2 days | Ideal — one of the best times of year |
| November | 27.7 °C | 23.6 °C | 1 day | Ideal — one of the best times of year |
| December | 23.8 °C | 20.5 °C | 2 days | Pleasant — a good time to go |
Before you go
Three things to check once you have picked your dates.
Entry
Entry rules depend on your nationality and change often. Check them before booking.
Safety
Some areas advised against
The country is open, but parts should be avoided.
Official advice updated 4 September 2026
Health
Recommended vaccinations, water quality, mosquitoes: advice depends on the country and the season. Some vaccines need time before departure.
Beau Fixe is not a safety or health authority. These notes summarise public advisories and link to their source; only the competent authorities are authoritative. Alert levels: Foreign, Commonwealth & Development Office (gov.uk), Open Government Licence v3.0.
FAQ
Can you swim in Heroica Guaymas in March?
The sea averages 19.6°C in March — too cold for most swimmers.
How hot is Heroica Guaymas in March?
Expect 26.1°C in the afternoon and 15.1°C at night, averaged over the last 10 years.
Does it rain a lot in Heroica Guaymas in March?
Around 1 days with rain (≥ 1 mm) in the month — 4% of days.