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Macapá weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Macapá?
For a warm holiday, the best week has been 11–17 December (Weather Index 79). Several start dates remain plausible, and the best timing varies between years. October is warmest (33°C), October is driest and September and October have the most sun.
- Warmest
- October 33°C
- Coolest
- January to April 29°C
- Driest
- October 15% rain-day chance
- Wettest
- May 96% rain-day chance
- Sunniest
- September and October 12 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Macapá
Macapá historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 29.3 | 24.1 | 95.2 | 29.5 | 318.8 | 8.5 |
| February | 28.9 | 24.2 | 93.9 | 26.3 | 357.8 | 7.2 |
| March | 28.9 | 24.3 | 95.5 | 29.6 | 441.5 | 6.8 |
| April | 29.3 | 24.5 | 95.3 | 28.6 | 451.0 | 7.1 |
| May | 29.9 | 24.7 | 96.1 | 29.8 | 388.2 | 8.8 |
| June | 30.4 | 24.5 | 91.7 | 27.5 | 211.6 | 10.3 |
| July | 30.8 | 24.5 | 82.3 | 25.5 | 154.6 | 10.8 |
| August | 31.7 | 25.0 | 50.6 | 15.7 | 65.2 | 11.0 |
| September | 32.4 | 25.3 | 25.7 | 7.7 | 25.6 | 11.5 |
| October | 32.7 | 25.4 | 14.5 | 4.5 | 14.2 | 11.7 |
| November | 32.0 | 25.2 | 38.0 | 11.4 | 76.3 | 11.2 |
| December | 30.4 | 24.6 | 87.1 | 27.0 | 191.0 | 9.8 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.