Temperature
Hot by day, warm at night.
Hot days. Hurricane risk near peak and humid air are the main drawbacks.
Hot by day, warm at night.
It rains on most days. About 22 wet days, more than in most months.
Sunshine is limited, with cloud often dominating.
Very humid air is a major factor this month.
In September, afternoons feel about 91° and nights feel near 84°.
Mostly cloudy skies this month.
Calm winds are typical in September.
September late afternoons are around 85°F, easing to about 81°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 73 | 60 | 1.5 | 6 | 4.6 | 72 | 75 |
| Feb | 76 | 62 | 1.6 | 6 | 5.4 | 72 | 74 |
| Mar | 79 | 65 | 2.2 | 7 | 5.9 | 68 | 75 |
| Apr | 82 | 69 | 2.2 | 7 | 6.3 | 68 | 77 |
| May | 85 | 73 | 3.8 | 12 | 6.6 | 71 | 80 |
| Jun | 87 | 76 | 7.3 | 22 | 4.6 | 78 | 83 |
| Jul | 88 | 78 | 6.3 | 23 | 4.5 | 79 | 85 |
| Aug | 88 | 78 | 6.6 | 24 | 4.1 | 79 | 86 |
| Sep | 87 | 77 | 6.9 | 22 | 3.8 | 80 | 85 |
| Oct | 83 | 74 | 3.5 | 11 | 4.8 | 76 | 83 |
| Nov | 79 | 68 | 1.6 | 6 | 5.0 | 74 | 80 |
| Dec | 75 | 64 | 1.4 | 6 | 4.7 | 75 | 77 |
Similar climates
Want a side-by-side climate view? Compare Palm Beach with Key West.
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 19, 2026
Data & methodology