The best time to visit Mariana is from May to August. The most comfortable month is June, with highs of 25 °C (77 °F) and 11 mm of rain over 1 day. December is the rainiest month (339 mm over 17 days), and the summer peak is the high season, with higher prices and big crowds.
Best time to visit, month by month
Mariana month by month
Temperature and rainfall averages from INMET (updated 2026). The verdict combines thermal comfort and rainfall. Tap a month to see the weather, crowds, prices and what is going on in detail.
| Month | High / Low | Rain | Rainy days | Verdict |
|---|---|---|---|---|
| January | 29° / 20° | 331 mm | 15 | Fair |
| February | 29° / 20° | 178 mm | 10 | Fair |
| March | 28° / 20° | 198 mm | 11 | Fair |
| April | 28° / 19° | 82 mm | 7 | Good |
| May | 26° / 17° | 28 mm | 3 | Excellent |
| June ★ | 25° / 15° | 11 mm | 1 | Excellent |
| July | 25° / 15° | 5 mm | 1 | Excellent |
| August | 26° / 16° | 11 mm | 1 | Excellent |
| September | 28° / 17° | 49 mm | 4 | Excellent |
| October | 29° / 19° | 110 mm | 8 | Good |
| November | 28° / 19° | 236 mm | 14 | Fair |
| December | 28° / 20° | 339 mm | 17 | Fair |
Hotels in Mariana
June is the best month and also falls in the high season in Mariana: the top-rated hotels fill up and rates rise close to the date. Book your room as soon as you have settled on your dates.
Rates change with the dates: confirm the price on Booking.com.
The weather in Mariana throughout the year
The May to August window brings together the most comfortable months in Mariana: less rain and pleasant temperatures. June is usually the best month, with highs of 25 °C (77 °F), lows of 15 °C (59 °F) and only 1 day of rain in the month: good conditions for enjoying outdoor attractions with less risk of downpours.
Summer. In summer (December to February), Mariana has highs of around 29 °C (84 °F) and lows of 20 °C (68 °F), and it is the wetter season, with about 283 mm of rain spread over about 14 days a month. The days are hot and call for beach time and shade.
Fall. In fall (March to May), Mariana has highs of around 27 °C (81 °F) and lows of 19 °C (66 °F), and it is the wetter season, with about 103 mm of rain spread over about 7 days a month. Temperatures are pleasant for sightseeing all day.
Winter. In winter (June to August), Mariana has highs of around 25 °C (77 °F) and lows of 15 °C (59 °F), and it is the driest time of year, with about 9 mm of rain a month. Temperatures are pleasant for sightseeing all day.
Spring. In spring (September to November), Mariana has highs of around 28 °C (82 °F) and lows of 18 °C (64 °F), and it is the wetter season, with about 132 mm of rain spread over about 9 days a month. The days are hot and call for beach time and shade.
What to avoid
There are two periods to think twice about before booking. December is usually the rainiest month, so anyone who prioritizes sun should avoid it. The other is high season (New Year's Eve, Carnival and the July school break), when attractions fill up and prices rise; if you want peace and savings, choose weeks without public holidays. None of this rules out the trip, but it changes the experience and the cost quite a bit.