Temperature
Pleasant by day, brisk at night.
Bay St. Louis is usually most comfortable in March, October, and November. Typical daytime highs range from 61–89°F across the year. Rain is frequent in many months.

Pleasant by day, brisk at night.
Several rainy days. About 7 wet days, the lowest monthly average.
Plenty of sun this month.
In November, afternoons feel about 66° and nights feel near 49°.
Partly cloudy skies this month.
Calm winds are typical in November.
November late afternoons are around 66°F, easing to about 60°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 61 | 44 | 4.7 | 10 | 7.0 | 73 |
| Feb | 65 | 48 | 4.7 | 9 | 7.7 | 75 |
| Mar | 71 | 53 | 5.2 | 10 | 9.0 | 73 |
| Apr | 76 | 59 | 4.3 | 10 | 10.1 | 73 |
| May | 83 | 67 | 3.8 | 11 | 11.4 | 75 |
| Jun | 88 | 73 | 5.7 | 16 | 11.8 | 78 |
| Jul | 89 | 75 | 6.3 | 20 | 11.3 | 81 |
| Aug | 89 | 74 | 6.3 | 19 | 10.5 | 81 |
| Sep | 86 | 71 | 4.9 | 13 | 10.1 | 78 |
| Oct | 79 | 61 | 3.5 | 8 | 9.4 | 74 |
| Nov | 70 | 51 | 3.8 | 7 | 8.3 | 74 |
| Dec | 63 | 46 | 4.3 | 10 | 7.1 | 77 |
Similar climates
Want a side-by-side climate view? Compare Bay St. Louis with New York City.
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: Aug 27, 2026
Data & methodology