Dec → Feb
29 to 32°
nights 24 to 25°
- 22 rainy days · 177 mm
- 9.9 h of sun
- sea 29°
When is the best time to visit Lençóis Maranhenses?
- Jan30°not recommended
- Feb29°not recommended
- Mar29°not recommended
- Apr29°not recommended
- May30°fair
- Jun30°recommended
- Jul31°recommended
- Aug32°recommended
- Sep32°recommended
- Oct32°fair
- Nov32°not recommended
- Dec32°not recommended
RecommendedFairNot recommended· afternoon temperature
The weather in Lençóis Maranhenses, month by month
The table of records, month by month
| Month | High | Low | Sunshine | Rainfall | Rainy days | Sea | Best |
|---|---|---|---|---|---|---|---|
| January | 30° | 24° | 10 h | 169 mm | 24 d | 29° | |
| February | 29° | 24° | 9.1 h | 290 mm | 26 d | 29° | |
| March | 29° | 23° | 8.5 h | 405 mm | 30 d | 29° | |
| April | 29° | 24° | 9.1 h | 328 mm | 27 d | 30° | |
| May | 30° | 24° | 10.4 h | 230 mm | 25 d | 30° | |
| June | 30° | 24° | 11.4 h | 88 mm | 17 d | 30° | ✓ |
| July | 31° | 24° | 11.7 h | 45 mm | 10 d | 29° | ✓ |
| August | 32° | 24° | 11.8 h | 15 mm | 5 d | 28° | ✓ |
| September | 32° | 25° | 11.7 h | 13 mm | 4 d | 28° | ✓ |
| October | 32° | 25° | 11.5 h | 17 mm | 6 d | 28° | |
| November | 32° | 25° | 11.3 h | 38 mm | 8 d | 29° | |
| December | 32° | 25° | 10.7 h | 73 mm | 15 d | 29° |
The four seasons in Lençóis Maranhenses, in figures
What the 2015-2024 records (Lençóis Maranhenses National Park) show, season by season, to compare at a glance instead of reading twelve rows of a table.
Mar → May
29 to 30°
nights 23 to 24°
- 27 rainy days · 321 mm
- 9.3 h of sun
- sea 30°
Jun → Aug
30 to 32°
nights 24°
- 11 rainy days · 49 mm
- 11.6 h of sun
- sea 29°
Sep → Nov
32°
nights 25°
- 6 rainy days · 23 mm
- 11.5 h of sun
- sea 28°
Book early for June to September
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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What to do in Lençóis Maranhenses, month by month
EventsLagoons filled between the dunesJune to SeptemberBumba Meu BoiJune to JulyDetails ↓
favourablewith compromisesunfavourable
Beach & swimming: good conditions all twelve months.
Diving & snorkelling: good conditions all twelve months.
- Towns & culture: July
Grid derived from the records (temperature, rainfall, sea), not from an opinion.
What's on in Lençóis Maranhenses, month by month?
What comes back every year, and when. One of these events fills the hotels and pushes prices up: something to aim for or to avoid, depending on what you want.
- June to SeptemberLagoons filled between the dunes big crowds
After the rainy season, thousands of turquoise lagoons form between the dunes, from June to September.
- June to JulyBumba Meu Boi
Groups from Maranhão bring out drums, embroidered costumes and a fabric ox for the Feast of St John celebrations.
Travelling off-peak
Month by month, in detail
January
Not recommended30°24° at night
- 169 mm · 24 d
- 10 h
- sea 29°
Low season, lower prices
February
Not recommended29°24° at night
- 290 mm · 26 d
- 9.1 h
- sea 29°
Low season, lower prices
March
Not recommended29°23° at night
- 405 mm · 30 d
- 8.5 h
- sea 29°
Low season, lower prices
April
Not recommended29°24° at night
- 328 mm · 27 d
- 9.1 h
- sea 30°
Low season, lower prices
May
Fair30°24° at night
- 230 mm · 25 d
- 10.4 h
- sea 30°
Low season, lower prices
June
Recommended30°24° at night
- 88 mm · 17 d
- 11.4 h
- sea 30°
High season, book early
July
Recommended31°24° at night
- 45 mm · 10 d
- 11.7 h
- sea 29°
High season, book early
August
Recommended32°24° at night
- 15 mm · 5 d
- 11.8 h
- sea 28°
High season, book early
September
Recommended32°25° at night
- 13 mm · 4 d
- 11.7 h
- sea 28°
High season, book early
October
Fair32°25° at night
- 17 mm · 6 d
- 11.5 h
- sea 28°
Low season, lower prices
November
Not recommended32°25° at night
- 38 mm · 8 d
- 11.3 h
- sea 29°
Low season, lower prices
December
Not recommended32°25° at night
- 73 mm · 15 d
- 10.7 h
- sea 29°
Quiet, then the holidays
Read the twelve months in detail
January. 30 °C in the afternoon and 24 °C at night. A very wet month, 169 mm of rain over 24 days. Plenty of sunshine: 10 h a day on average. The sea is at 29 °C, a proper swim. Low season: fewer people, lower prices.
February. 29 °C in the afternoon and 24 °C at night. A very wet month, 290 mm of rain over 26 days. Plenty of sunshine: 9.1 h a day on average. The sea is at 29 °C, a proper swim. Low season: fewer people, lower prices.
March. 29 °C in the afternoon and 23 °C at night. A very wet month, 405 mm of rain over 30 days. Expect 8.5 h of sunshine a day. The sea is at 29 °C, a proper swim. Low season: fewer people, lower prices.
April. 29 °C in the afternoon and 24 °C at night. A very wet month, 328 mm of rain over 27 days. Plenty of sunshine: 9.1 h a day on average. The sea is at 30 °C, a proper swim. Low season: fewer people, lower prices.
May. 30 °C in the afternoon and 24 °C at night. Frequent rain: 230 mm over 25 days. Plenty of sunshine: 10.4 h a day on average. The sea is at 30 °C, a proper swim. Low season: fewer people, lower prices.
June. 30 °C in the afternoon and 24 °C at night. Frequent rain: 88 mm over 17 days. Plenty of sunshine: 11.4 h a day on average. The sea is at 30 °C, a proper swim. High season: book early.
July. 31 °C in the afternoon and 24 °C at night. Expect 10 days of rain in the month (45 mm). Plenty of sunshine: 11.7 h a day on average. The sea is at 29 °C, a proper swim. High season: book early.
August. Real heat: 32 °C at the warmest of the day, 24 °C at night. Rain stays light: 15 mm over 5 days. Plenty of sunshine: 11.8 h a day on average. The sea is at 28 °C, a proper swim. High season: book early.
September. Real heat: 32 °C at the warmest of the day, 25 °C at night. Rain stays light: 13 mm over 4 days. Plenty of sunshine: 11.7 h a day on average. The sea is at 28 °C, a proper swim. High season: book early.
October. Real heat: 32 °C at the warmest of the day, 25 °C at night. Rain stays light: 17 mm over 6 days. Plenty of sunshine: 11.5 h a day on average. The sea is at 28 °C, a proper swim. Low season: fewer people, lower prices.
November. Real heat: 32 °C at the warmest of the day, 25 °C at night. Expect 8 days of rain in the month (38 mm). Plenty of sunshine: 11.3 h a day on average. The sea is at 29 °C, a proper swim. Low season: fewer people, lower prices.
December. Real heat: 32 °C at the warmest of the day, 25 °C at night. A very wet month, 73 mm of rain over 15 days. Plenty of sunshine: 10.7 h a day on average. The sea is at 29 °C, a proper swim. Quiet at the start of the month, then busier as the holidays approach.
Same season, other ideas
Their best time overlaps with this one: worth comparing before you book.
Frequently asked questions
When is the best time to visit Lençóis Maranhenses?
June to September: over these months, recorded highs range from 30 to 32 °C, with 9 days of rain a month on average (2015-2024 records, Lençóis Maranhenses National Park).
Which month should you avoid in Lençóis Maranhenses?
March: it is the wettest of the months to avoid, with 405 mm over 30 days of rain on average, according to 2015-2024 records at the reference point (Lençóis Maranhenses National Park).
What is the hottest month in Lençóis Maranhenses?
August, with 32 °C on average in the afternoon and 24 °C at night. 2015-2024 records (Lençóis Maranhenses National Park).
What is the coldest month in Lençóis Maranhenses?
February, with 29 °C at best during the day and 24 °C at night. 2015-2024 records (Lençóis Maranhenses National Park).
What is the driest month in Lençóis Maranhenses?
September: 13 mm over 4 days of rain, against 405 mm in March, the wettest month.
Which month has the most sunshine in Lençóis Maranhenses?
August, with 11.8 h of sunshine a day on average. Note that this counts clear skies, not the length of the day.
When can you swim in Lençóis Maranhenses?
The water never drops below 22 °C: from 28 to 30 °C depending on the month (warmest in April), measured in 2023-2024 on the nearest coast (Atins).
Plan this trip
📒 The free printable Lençóis Maranhenses guide: itinerary, map, where to sleep→
🧭 When to visit Brazil: the country overview→
🗓️ Best time to visit: all our destinations→
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Photos: Marije Kouyzer / Pexels · Travis Kerkvliet / Pexels