Updated October 2026
Fort Matanzas National Monument Weather by Month
Fort Matanzas National Monument is warmest in July, when the nearest NOAA climate station averages a high of 88°F and a low of 77°F, and coldest in January, with an average high of 65°F and an average low of 49°F. September is the wettest month, with about 7.7 inches of precipitation.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 5.8 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Fort Matanzas National Monument can differ from these, particularly with elevation.
Warmest month
Jul
88°F avg high
Coldest month
Jan
49°F avg low
Wettest month
Sep
7.7 in avg
Longest days
Jun
13.9 h of daylight
Average weather at Fort Matanzas by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 65°F | 49°F | 3.3 in | 10.3 h |
| February | 68°F | 52°F | 3.6 in | 11.0 h |
| March | 72°F | 56°F | 3.1 in | 11.8 h |
| April | 78°F | 62°F | 2.5 in | 12.7 h |
| May | 83°F | 70°F | 2.8 in | 13.5 h |
| June | 86°F | 76°F | 5.9 in | 13.9 h |
| July | 88°F | 77°F | 6.3 in | 13.7 h |
| August | 88°F | 77°F | 6.4 in | 13.1 h |
| September | 86°F | 76°F | 7.7 in | 12.2 h |
| October | 81°F | 69°F | 4.5 in | 11.3 h |
| November | 74°F | 60°F | 2.5 in | 10.5 h |
| December | 69°F | 53°F | 2.9 in | 10.1 h |
| Year total | 51.5 in |
NOAA 1991–2020 climate normals from station USC00086767, 5.8 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Fort Matanzas is at that time of year.
Fort Matanzas weather by season
Winter: December to February
Average highs bottom out at 65°F in January, between 69°F in December and 68°F in February, with average lows between 49°F and 53°F. Together the three months average 9.8 inches of precipitation, about 19% of the yearly total. Daylight is at its shortest, about 10.1 hours in December.
Spring: March to May
Average highs climb from 72°F in March to 83°F in May, with average lows between 56°F and 70°F. Together the three months average 8.4 inches of precipitation, about 16% of the yearly total and less than in any other season. Daylight lengthens from about 11.8 hours in March to 13.5 in May.
Summer: June to August
Average highs hold near 87°F in all three months, with average lows near 77°F. Together the three months average 18.6 inches of precipitation, about 36% of the yearly total and more than in any other season. Daylight is at its longest, about 13.9 hours in June.
Fall: September to November
Average highs fall from 86°F in September to 74°F in November, with average lows between 60°F and 76°F. Together the three months average 14.7 inches of precipitation, about 29% of the yearly total. Daylight shortens from about 12.2 hours in September to 10.5 in November.
What the National Park Service says about the weather
Summers are hot and humid with afternoon thundershowers. Sunscreen, a hat, UV protective sunglasses, and are recommended. Drink plenty of water. Winters are cool to mild with some cold spells, especially with wind from the north or off the water. Fall and spring are temperate with temperatures around 70F-80F (21C-26C). During danger of lightning, the fort will be closed and ferry service will be suspended. June-November is hurricane season so check for tropical storms before visiting.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Fort Matanzas
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 29.71°N, 81.24°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Fort Matanzas National Monument →
Weather and crowds together
July is both the warmest month and the busiest, with about 1.5× the visitors of the park's average month. December is the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Fort Matanzas National Monument. For hotels, cabins and rentals close to the park, see where to stay near Fort Matanzas.
Where to stay near Fort Matanzas
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Top-rated places to stay near Fort Matanzas
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Frequently Asked Questions
July is the warmest month at Fort Matanzas National Monument, with an average high of 88°F and an average low of 77°F. That is the 1991–2020 average at the nearest long-record NOAA station, 5.8 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Fort Matanzas National Monument, with an average low of 49°F and an average high of 65°F, based on NOAA 1991–2020 climate normals.
September is the wettest month, with about 7.7 inches of precipitation. April and November are the driest, at about 2.5 inches each. The station records about 51.5 inches of precipitation in an average year.
Daylight at Fort Matanzas National Monument runs from about 10.1 hours a day in December to about 13.9 hours in June, computed from the park's latitude.
Weather at nearby parks
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Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00086767), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.