Climate and monthly weather forecast
Jacksonville, FL

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Water geysers at the fountain of Jacksonville in Florida, USA, with the cityscape
Water geysers at the fountain of Jacksonville in Florida, USA, with the cityscape

The climate of Jacksonville

Jacksonville, residing in Florida's northeastern corner, possesses a Humid subtropical climate (Köppen climate classification: Cfa) perched alongside the Atlantic Ocean. The significant climate features consist of a year-round span of non-dry conditions, moderate winter temperatures, and sweltering humid summer conditions.

Annually, Jacksonville experiences a wide temperature spectrum from a high of 91.4°F (33°C) in the middle of the year to a lower threshold of 47.8°F (8.8°C) during winter months. Such variations in temperature are accompanied by concurrent changes in relative humidity. The highest relative humidity, peaking at 76%, occurs in December contrasted with a lower percentage of 69% registered in the Spring months of March.

Rainfall patterns in Jacksonville offer another distinguishing characteristic. The city receives the highest volume of rain in August with a total of 3.66" (93mm) recorded. Still, the number of rainy days is most predominant between July and August, surprisingly exceeding the months with heavier rainfall. The pressure remains relatively stable year-round, fluctuating slightly but dwelling around the 30" (762mm) mark.

On the other hand, visibility remains pretty consistent throughout the year at 6 miles. Wind patterns fluctuate mildly across the year, with January to April experiencing marginally more robust winds than the rest of the year.

The best time to visit Jacksonville

Analyzing the nuanced weather patterns in Jacksonville reveals that the most favorable time to schedule a visit is during Spring. March and April not only offer mild temperatures ranging from 63.1°F (17.3°C) to 80.1°F (26.7°C) but also boast comfortable levels of humidity. Sunshine duration is relatively prolonged, as visitors can enjoy approximately nine hours of sunlight per day. The UV index accounts for better outdoor conditions due to mild readings of 5 to 6.

The worst time to visit Jacksonville

Contrarily, the unfavorable period to visit Jacksonville appears to be the summer months from June to August. This interval is characterized by the highest temperatures of the year, oscillating from 90.1°F (32.3°C) to 91.4°F (33°C). The discomfort stemming from these sweltering temperatures is further amplified with relative humidity readings lingering around 74% to 75%. Additionally, precipitation intervals surge as these months witness the heaviest rainfall of the year.

Spring weather in Jacksonville

Spring opens a delightful weather window in Jacksonville. The temperatures during the spring months gradually rise from 63.1°F (17.3°C) in March up to 80.1°F (26.7°C) in April. The relative humidity levels moderately vary between 69% to 70%, providing comfortable conditions. Rainfall averages between 1.38" (35mm) to 2.09" (53mm) but does not drastically affect the average number of sunny days that is approximately 17. Cumulatively, the weather conditions during spring augment the city's appeal to visitors.

Summer weather in Jacksonville

Contrastingly, summer in Jacksonville paints a different climatic scenario. The temperature begins to climb in May, culminating in the year's hottest periods in July and August. The temperatures during these months hit the year's zenith hovering at 91.4°F (33°C). During this period, the city experiences a significant increase in rainfall, peaking at 3.66" (93mm) in August, accompanying a surge in the number of rainy days and relative humidity levels.

Autumn weather in Jacksonville

The advent of Autumn denotes a gradual cooling phase in the atmospheric conditions of the city. In September, temperatures begin to recede from the summer highs, dwindling from 86.9°F (30.5°C) to 72°F (22.2°C) by November. Relative humidity clings to an average of 74%, and the city experiences less rainfall, with numbers dwindling to 1.22" (31mm) by November. The number of sunlight hours also gradually decreases, indicating the progression into Winter.

Winter weather in Jacksonville

Winter in Jacksonville witnesses further declining temperatures. December and January temperatures oscillate from 67.5°F (19.7°C) to 47.8°F (8.8°C). However, these months also reveal increased relative humidity readings, reaching up to 76% in December. Rainfall also witnesses a noticeable increase in December, reaching 1.89" (48mm). Yet, the number of sunny days remains relatively consistent, ensuring that the city maintains its appeal throughout the year.

Weather in January

The year in Jacksonville, Florida starts off with the onset of the dry, warm climate, showcasing a sense of tranquility in the weather conditions. The city marks the middle of winter in January. However, this does not imply plummeting temperatures. Weather in January »

Weather in February

As the year moves into February, Jacksonville experiences a slight rise in warmth. This progression towards spring brings a noticeable shift in weather patterns. February experiences marginally more rain than January, with rainfall measuring 1.46" (37mm). Weather in February »

Weather in March

March heralds the entrance of spring, and with it, an emphasis on slightly warmer temperatures. The city’s weather becomes increasingly pleasing, signaling an end to the colder months. A comparison with February reveals a drop in relative humidity from 73% to 69%. Weather in March »

Weather in April

April's arrival brings a noticeable difference in Jacksonville's weather - mainly through increased temperatures. There is a rising trend towards humidity, although it remains fairly consistent from March. Rainfall patterns register a significant increase from 1.38" (35mm) in March to 2.09" (53mm). Weather in April »

Weather in May

In May, the city fully embraces spring. The increase in temperatures continues while weather conditions remain reasonably stable. The most notable shift is the substantial rise in daylight hours from 12.9 hours in April to 13.7 hours. Weather in May »

Weather in June

June marks the beginning of summer in Jacksonville, offering a notable change in temperature and weather conditions. The city sees the highest increase in rainfall from 2.09" (53mm) in May to 2.8" (71mm), indicating the onset of the rainy season. Weather in June »

Weather in July

In the heart of summer, the weather in July substantiates Jacksonville's appeal. The warmth experienced in June escalates, generating a thriving, yet intense, summer. Rainfall hits the peak for the year at 3.23" (82mm), making July the wettest month. Weather in July »

Weather in August

The usually relentless summer heat in Jacksonville experiences a slight reprieve in August. In comparison to July, there isn’t a major fluctuation in terms of weather characteristics. A notably slight decrease in sunshine hours from 10.9 hours in July to 10.4 hours in August occurs. Weather in August »

Weather in September

As September comes around, Jacksonville experiences a gradual transition from summer towards fall. There is a noticeable drop in the sea temperature from 83.5°F (28.6°C) in August to 82.9°F (28.3°C). Despite the transition period, the vibrancy of Jacksonville's weather persists. Weather in September »

Weather in October

With October arrives a refreshing change in Jacksonville's weather. The city starts transitioning into its short-lived fall period characterized by milder temperatures. A subtracting notable shift in rainfall from 2.48" (63mm) in September to 1.97" (50mm) in October emerge. Weather in October »

Weather in November

November entices Jacksonville with the delightful onset of winter, subtly moving away from the mild temperatures of October. The city sees an appreciable reduction in rainfall at 1.22" (31mm), creating drier conditions. Despite the changing season, Jacksonville remains a gem for sun-seekers, as the cooler temperatures are complemented by ample sun exposure. Weather in November »

Weather in December

December brings Jacksonville full circle, as it delves deep into the heart of winter. The city experiences a steady fall in the average sea temperature from 71.9°F (22.2°C) in November to 64.9°F (18.3°C) in December. A distinct increase in cloud cover brings over shades of winter amidst the Floridian fair climate. Weather in December »
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Frequently asked questions

What time of the year is the coldest in Jacksonville?

January stands out as Jacksonville's coldest month, with an average high-temperature of 63.1°F (17.3°C) and a low-temperature of 47.8°F (8.8°C).

What is the driest month in Jacksonville?

January is the month with the least rainfall. Rain falls for 9.9 days and accumulates 1.1" (28mm) of precipitation.

How many days does it rain in Jacksonville?

Throughout the year, in Jacksonville, Florida, there are 172.6 rainfall days, and 25.35" (644mm) of precipitation is accumulated.

When it does not snow in Jacksonville?

January through November are months without snowfall in Jacksonville.

How many days does it snow in Jacksonville?

In Jacksonville, during the entire year, snow falls for 0.1 days.

What months are the ocean coldest in Jacksonville?

January and February, with an average ocean temperature of 60.4°F (15.8°C), are months with the coldest seawater in Jacksonville, Florida.

What is the month with the lowest UV index in Jacksonville?

January is the month with the lowest UV index in Jacksonville, with an average maximum UV index of 4.

What is the least humid month in Jacksonville?

March is the least humid month in Jacksonville, with an average relative humidity of 69%.

When is Daylight Saving Time (DST) in Jacksonville?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Jacksonville, Florida, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When is the highest UV index in Jacksonville?

May through August, with an average maximum UV index of 7, are months with the highest UV index in Jacksonville, Florida.

When are the longest days in Jacksonville?

June has the longest days of the year in Jacksonville, Florida, with an average of 14h and 6min of daylight.

What time of the year is the hottest in Jacksonville?

July and August represent the warmest period in Jacksonville, Florida, with an average high-temperature of 91.4°F (33°C).

What month has the most sunshine in Jacksonville?

The month with the most sunshine is July, with an average of 10.9h of sunshine.

What is the rainiest month in Jacksonville?

The month with the most rainfall in Jacksonville is August, when the rain falls for 23.3 days and typically aggregates up to 3.66" (93mm) of precipitation.

When is the ocean warmest in Jacksonville?

August is the month with the warmest seawater, with an average ocean temperature of 83.5°F (28.6°C).

What is the most humid month in Jacksonville?

The most humid month in Jacksonville is December, with an average relative humidity of 76%.

When does it snow in Jacksonville?

The only month with snowfall in Jacksonville is December.

When does it snow the most in Jacksonville?

The month with the most snowfall days is December, when snow falls for 0.1 days.

What is the month with the shortest days in Jacksonville?

December has the shortest days of the year, with an average of 10h and 12min of daylight.

What is the month with the least sunshine in Jacksonville?

The month with the least sunshine in Jacksonville, Florida, is December, with an average of 5.9h of sunshine.

Average temperature
Jacksonville, FL

Average temperature - Jacksonville, FL

The warmest months (with the highest average high temperature) are July and August (91.4°F).
The month with the lowest average high temperature is January (63.1°F).

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (47.8°F).

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Average pressure
Jacksonville, FL

Average pressure - Jacksonville, FL

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed
Jacksonville, FL

Average wind speed - Jacksonville, FL

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity
Jacksonville, FL

Average humidity - Jacksonville, FL

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is March (69%).

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Average rainfall
Jacksonville, FL

Average rainfall - Jacksonville, FL

The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days
Jacksonville, FL

Average rainfall days - Jacksonville, FL

The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is November (9 days).

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Average snowfall days
Jacksonville, FL

Average snowfall days - Jacksonville, FL

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average sea temperature
Jacksonville, FL

Average sea temperature - Jacksonville, FL

The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (60.4°F).

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Average daylight / Average sunshine
Jacksonville, FL

Average daylight / Average sunshine - Jacksonville, FL

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average sunshine days
Jacksonville, FL

Average sunshine days - Jacksonville, FL

The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is August (6.3 days).

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Average visibility
Jacksonville, FL

Average visibility - Jacksonville, 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).

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Jacksonville, Florida, USA

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