Macapá weather by month & the best time to visit
Brazil · coastal city break · tropical monsoon climate

The best time to visit Macapá is August — its sunniest month (Sunshine Score 78/100), with September and October close behind. Macapá averages about 2,203 hours of sunshine a year. Daytime highs around 30°C / 86°F and roughly 72 mm of rain in August.
When is the best time to visit Macapá?
For sunshine, the best time to visit Macapá is August, then September and October. The dullest month is November (58/100, 45 mm of rain). The full month-by-month picture is in the table below.
How sunny is Macapá?
Macapá gets a moderate 2,203 hours of sunshine a year. August (78/100) is noticeably better than November (58). It ranks #106 of 131 destinations in Brazil for annual sunshine, below the national median of 2,486 hours. Rain has a clear season: the wettest stretch, around March, carries about 44% of the annual 1,986 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 64 | 30° / 86°F | 23° / 73°F | 201 mm | 9 | 30° / 86°F |
| February | 64 | 29° / 84°F | 22° / 72°F | 286 mm | 9 | 30° / 86°F |
| March | 64 | 29° / 84°F | 23° / 73°F | 283 mm | 9 | 30° / 86°F |
| April | 64 | 29° / 84°F | 23° / 73°F | 299 mm | 9 | 30° / 86°F |
| May | 64 | 29° / 84°F | 23° / 73°F | 251 mm | 9 | 30° / 86°F |
| June | 64 | 29° / 84°F | 23° / 73°F | 187 mm | 9 | 30° / 86°F |
| July | 64 | 29° / 84°F | 22° / 72°F | 151 mm | 10 | 30° / 86°F |
| August | 78 | 30° / 86°F | 22° / 72°F | 72 mm | 11 | 31° / 88°F |
| September | 76 | 33° / 91°F | 22° / 72°F | 38 mm | 11 | 30° / 86°F |
| October | 68 | 34° / 93°F | 23° / 73°F | 38 mm | 11 | 30° / 86°F |
| November | 58 | 35° / 95°F | 23° / 73°F | 45 mm | 10 | 30° / 86°F |
| December | 67 | 32° / 90°F | 23° / 73°F | 135 mm | 9 | 30° / 86°F |
Sea temperature in Macapá by month
The sea off Macapá is warmest in August at around 31°C / 88°F, and coolest in January at 30°C / 86°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
How Macapá compares month by month: Macapá vs Belém · Macapá vs Santarém · Macapá vs Cayenne · all comparisons
Macapá: questions and answers
What kind of destination is Macapá?
Macapá is a coastal city break in Brazil with a tropical monsoon climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Macapá get a year?
Macapá gets about 2,203 hours of sunshine a year, at its best around August.
When is the best time to visit Macapá?
The sunniest time to visit Macapá is August, when the Sunshine Score peaks at 78/100 (with September and October close behind). Expect daytime highs around 30°C / 86°F.
What is the least sunny month in Macapá?
November is the least sunny month in Macapá, scoring 58/100 with about 45 mm of rain.
What is the sea temperature in Macapá?
The sea in Macapá ranges from about 30°C (January) to 31°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Macapá?
The typical midday UV index in Macapá peaks around 11 (extreme) in August, easing to about 9 (very high) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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