Climate and monthly weather forecastMerritt Island, FL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Merritt Island, Florida, is another pleasant winter month, with an average temperature varying between 57.7°F (14.3°C) and 68.4°F (20.2°C). In Merritt Island, the lowest average temperatures are observed in January, with a high of 68.4°F (20.2°C) and a low of 57.7°F (14.3°C). Weather in January »Weather in February
The last month of the winter, February, is also an agreeable month in Merritt Island, Florida, with temperature in the range of an average low of 60.3°F (15.7°C) and an average high of 70.3°F (21.3°C). As Merritt Island welcomes February, the average high-temperature is noted at a still agreeable 70.3°F (21.3°C), closely aligning with the preceding month. Weather in February »Weather in March
The first month of the spring, March, is still a pleasant month in Merritt Island, Florida, with an average temperature varying between 73°F (22.8°C) and 62.6°F (17°C). During March, Merritt Island records an average high-temperature of a still agreeable 73°F (22.8°C), marking a slight divergence from February's 70.3°F (21.3°C). Weather in March »Weather in April
April in Merritt Island, Florida, is a moderately hot spring month, with temperature in the range of an average low of 68°F (20°C) and an average high of 77.9°F (25.5°C). In the transition from March to April, Merritt Island reports an average high-temperature of a warm 77.9°F (25.5°C), indicating a close resemblance to the prior month. Weather in April »Weather in May
The last month of the spring, May, is also a moderately hot month in Merritt Island, Florida, with an average temperature fluctuating between 72.5°F (22.5°C) and 81.5°F (27.5°C). As May takes its course, Merritt Island's average high-temperature registers at a still warm 81.5°F (27.5°C), closely aligning with the preceding month. Weather in May »Weather in June
The first month of the summer, June, is still a warm month in Merritt Island, Florida, with an average temperature fluctuating between 76.6°F (24.8°C) and 85.1°F (29.5°C). As Merritt Island steps into June, the average high-temperature is measured at a still moderately hot 85.1°F (29.5°C), displaying minor differences from May's 81.5°F (27.5°C). Weather in June »Weather in July
July is a tropical summer month in Merritt Island, Florida, with an average temperature fluctuating between 78.3°F (25.7°C) and 86.7°F (30.4°C). The advent of July brings an average high-temperature of a tropical 86.7°F (30.4°C), almost identical to the preceding month. Weather in July »Weather in August
The last month of the summer, August, is another hot month in Merritt Island, Florida, with temperature in the range of an average high of 87.3°F (30.7°C) and an average low of 78.6°F (25.9°C). In Merritt Island, temperatures reach their average annual highs in August, measuring 87.3°F (30.7°C) and a minimum average of 78.6°F (25.9°C). Throughout August, the heat index is calculated to be a blistering 104°F (40°C). Weather in August »Weather in September
September, the first month of the autumn in Merritt Island, is still a warm month, with an average temperature fluctuating between 85.1°F (29.5°C) and 77.7°F (25.4°C). Transitioning into September, Merritt Island records an average high-temperature of a moderately hot 85.1°F (29.5°C), almost identical to August's 87.3°F (30.7°C). Weather in September »Weather in October
October, the same as September, is another warm autumn month in Merritt Island, Florida, with an average temperature varying between 72.7°F (22.6°C) and 81°F (27.2°C). The transition from September to October brings an average high-temperature of a still warm 81°F (27.2°C), barely different from September's 85.1°F (29.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another warm month in Merritt Island, Florida, with an average temperature varying between 66.6°F (19.2°C) and 75°F (23.9°C). November marks a gentle change in average high-temperature, declining from October's 81°F (27.2°C) to a still warm 75°F (23.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a pleasant month in Merritt Island, Florida, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 71.6°F (22°C). Merritt Island experiences an average high-temperature of an agreeable 71.6°F (22°C) with the onset of December, subtly varied from November's 75°F (23.9°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Merritt Island, FL
The warmest month (with the highest average high temperature) is August (87.3°F).
The month with the lowest average high temperature is January (68.4°F).
The month with the highest average low temperature is August (78.6°F).
The coldest month (with the lowest average low temperature) is January (57.7°F).
Average pressure
Merritt Island, FL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
30"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed
Merritt Island, FL
- Average wind speed in January:
10mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.7mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
7.2mph - Average wind speed in September:
7.9mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are January and November (10mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity
Merritt Island, FL
The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is March (72%).
Average rainfall
Merritt Island, FL
- Average rainfall in January:
1.22" - Average rainfall in February:
1.18" - Average rainfall in March:
1.14" - Average rainfall in April:
1.57" - Average rainfall in May:
2.64" - Average rainfall in June:
3.7"
- Average rainfall in July:
4.02" - Average rainfall in August:
5.12" - Average rainfall in September:
3.58" - Average rainfall in October:
2.56" - Average rainfall in November:
1.46" - Average rainfall in December:
1.18"
The wettest month (with the highest rainfall) is August (5.12").
The driest month (with the least rainfall) is March (1.14").
Average rainfall days
Merritt Island, FL
- Average rainfall days in January:
10.5 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
20.8 days
- Average rainfall days in July:
23.8 days - Average rainfall days in August:
24.7 days - Average rainfall days in September:
22.5 days - Average rainfall days in October:
14.9 days - Average rainfall days in November:
12.5 days - Average rainfall days in December:
12.7 days
The month with the highest number of rainy days is August (24.7 days).
The month with the least rainy days is February (9.6 days).
Average daylight / Average sunshine
Merritt Island, FL
- Average daylight in January:
10h and 36min - Average daylight in February:
11h and 12min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 54min - Average daylight in May:
13h and 36min - Average daylight in June:
13h and 54min
- Average daylight in July:
13h and 42min - Average daylight in August:
13h and 6min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 30min - Average daylight in November:
10h and 42min - Average daylight in December:
10h and 24min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in January:
6h and 6min - Average sunshine in February:
8h and 0min - Average sunshine in March:
8h and 30min - Average sunshine in April:
9h and 54min - Average sunshine in May:
10h and 42min - Average sunshine in June:
10h and 48min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
10h and 48min - Average sunshine in September:
9h and 0min - Average sunshine in October:
7h and 12min - Average sunshine in November:
6h and 18min - Average sunshine in December:
6h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days
Merritt Island, FL
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
6.8 days
- Average sunshine days in July:
4.5 days - Average sunshine days in August:
3.1 days - Average sunshine days in September:
5.3 days - Average sunshine days in October:
12.5 days - Average sunshine days in November:
11.5 days - Average sunshine days in December:
14.3 days
The month with the most sunshine days is January (17.2 days).
The month with the least sunshine days is August (3.1 days).
Average UV index
Merritt Island, FL
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover
Merritt Island, FL
The months with the most cloud cover are January, November and December (Cloud cover 34).
The months with the least cloud cover are April, May and July (Cloud cover 26).
Average visibility
Merritt Island, FL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





