Temperature
Warm by day, warm at night.
83°Ftypical September high
Typical range
September climate
September in Willemstad
Curacao · Caribbean
Warm days and some sun. Humid air and wind on open waterfronts and rooftops are the main drawbacks.
Some tradeoffs
Early to mid
Daytime high
83°F
Lows around 81°F
Rain
Several rainy days
Sun
11 h/day
Air feel
Very humid
Sea temp
85°F
Great for swimming
Wind
17 mph
Windy
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days, mostly brief and on-and-off. About 13 wet days, more than in most months.
43%wet-day frequency
AmountWet-day chance
Sunshine
A mix of sunshine and cloud.
11 hSeptember sunshine
Heat & humidity by month
Very humid air is a major factor this month.
88%September Heat feel
Warm airHumid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 84° and nights feel near 83°.
ComfortableWarmHotNight hours
Clear sky
Mostly cloudy skies this month.
37%September Clear sky
Clear skyCloud
Wind pattern
Wind can affect exposed beach comfort.
17 mphSeptember Windy
Sea temperature
85°FSeptember sea temp
More detailIncludes daypart comfort
Typical September day
September stays around 82°F through the day and night, with little temperature relief.
Avg temp Typical range
Morning82°F
Feels 84°F
Rain24%
Cloud66%
Humid airVery high
Sun intensityModerate
Midday82°F
Feels 84°F
Rain5%
Cloud62%
Humid airVery high
Sun intensityStrong
Late afternoon83°F
Rain2%
Cloud59%
Humid airVery high
Sun intensityStrong
Early evening83°F
Rain8%
Cloud59%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 79 | 77 | 2.0 | 14 | 11.0 | 82 | 80 |
| Feb | 79 | 77 | 1.0 | 9 | 11.4 | 81 | 80 |
| Mar | 79 | 78 | 0.8 | 7 | 11.5 | 82 | 80 |
| Apr | 80 | 78 | 1.2 | 7 | 11.2 | 84 | 80 |
| May | 81 | 79 | 1.5 | 9 | 11.5 | 85 | 81 |
| Jun | 81 | 79 | 1.8 | 12 | 12.0 | 85 | 82 |
| Jul | 81 | 79 | 1.6 | 11 | 12.0 | 85 | 83 |
| Aug | 82 | 80 | 1.7 | 12 | 11.6 | 84 | 83 |
| Sep | 83 | 81 | 2.4 | 13 | 11.0 | 83 | 85 |
| Oct | 83 | 80 | 4.6 | 21 | 10.4 | 83 | 85 |
| Nov | 82 | 79 | 6.0 | 22 | 10.4 | 83 | 84 |
| Dec | 80 | 78 | 3.4 | 19 | 10.8 | 82 | 82 |
Similar climates
Similar
Similar travel stylePlaya del CarmenMexicoSimilar travel stylePhnom PenhCambodiaSimilar travel styleMumbaiIndiaSimilar travel styleHo Chi Minh CityVietnam
Want a side-by-side climate view? Compare Willemstad with Playa del Carmen.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology