Climate and monthly weather forecastTreasure Island, FL
Climate and monthly weather forecast
The climate of Treasure Island
Treasure Island, Florida falls into the Köppen climate classification of Cfa. This represents a humid subtropical climate with no dry season. The geography of Treasure Island places it near the coast, resulting in the influence of the sea and creating distinctly warm temperature patterns throughout the year.On average, the temperature oscillates between highs ranging from 66.7°F (19.3°C) in January to 87.8°F (31°C) in August. Concurrently, average lows vary from 56.3°F (13.5°C) in January to 80.6°F (27°C) in August. The convergence of higher temperatures with the sea's influence creates fluctuating humidity levels, with the lowest measured at 72% in October and the highest at 77% in December.
The annual rainfall in Treasure Island is somewhat sporadic with most precipitation occurring from June through August. July marks the peak with an impressive average of 1.85" (47mm). Considering rainfall frequency, July and August receive approximately 18 days of rainfall each, whereas drier months such as January, February, and March only experience rainfall for around 5.6 days.
One should note that the influence of the sea causes variations in sea temperature. These temperatures start from a cooler 64°F (17.8°C) in January, gradually warm up to a summery peak of 86.7°F (30.4°C) in August, and retreat back down as the year progresses. The warmer sea during summer months also has an impact on the overall atmospheric humidity levels on Treasure Island.
The best time to visit Treasure Island
The ideal season to visit Treasure Island would arguably be between March and May. Springtime in Treasure Island brings a comfortable blend of warmth and dry weather. Air temperatures hover between 72.1°F (22.3°C) and 82.2°F (27.9°C), leading to a comfortable climate that is neither too hot nor too cold. The sea temperature too rises from a pleasant 66.7°F (19.3°C) to a more beach-friendly 78.2°F (25.7°C) during these months. Rainfall remains at its lowest, ranging from 0.12" (3mm) to 0.51" (13mm). Travellers should consider this period for vacationing as it delivers optimal climatic conditions for outdoor and beach activities.The worst time to visit Treasure Island
Conversely, a less favourable time to visit Treasure Island would be between June and August. These months can generate discomfort due to the increased humidity, above-average temperature, and higher rainfall. The recorded highest temperature and humidity level during this period would be 87.8°F (31°C) and 74% respectively. Rainfall ascends up to 1.85" (47mm) during July, adding increased precipitation to the mix of considerable heat and humidity.Spring weather in Treasure Island
Spring in Treasure Island, from March to May, is typified by warm temperatures and lower humidity. The period commences with a moderate temperature range of 66.7°F (19.3°C) to 72.1°F (22.3°C), which then escalates up to 77.7°F (25.4°C) to 82.2°F (27.9°C) by the end of May. Although the weather remains relatively dry, the approximate rainfall hovers between 0.12" (3mm) to 0.51" (13mm) and daylight extends up to almost 14 hours by the end of May.Summer weather in Treasure Island
Summer on Treasure Island is characterized by sweltering temperatures, higher humidity, and increased rainfall. With temperatures frequently reaching as high as 85.8°F (29.9°C) to a sweltering 87.8°F (31°C), combined with the relative humidity peaking at 74%, conditions can be quite challenging. The rainfall also intensifies during this period, with rainfall ranging from 1.38" (35mm) to 1.85" (47mm).Autumn weather in Treasure Island
Autumn ushers in a more manageable climate. Ranging from September to November, temperatures cool progressively from an initial 86.5°F (30.3°C) to a less intense 75°F (23.9°C). Humidity also gradually decreases, ranging from 74% to 77%. Rainfall experiences a significant drop from 1.02" (26mm) to 0.31" (8mm) by the end of November, creating a more desirable atmosphere for visitors.Winter weather in Treasure Island
Winter in Treasure Island is rather mild. Observed from December through to February, temperatures vary from a comfortable 56.3°F (13.5°C) to a peak of 68.9°F (20.5°C). Relative humidity hovers around 77%, while rainfall remains comparatively low. Specifically, December records an average rainfall of 0.67" (17mm), reducing substantially in the succeeding months. This season reflects a relatively cooler tranquil weather that may appeal to those seeking a low-intensity outdoor experience.Weather in January
Beginning the year, Treasure Island, Florida experiences mild weather with humidity and cloud cover maintaining a steady presence. With temperatures ranging from 56.3°F (13.5°C) to 66.7°F (19.3°C), the city offers a perfect respite from the bitter cold experienced by the rest of the country. Weather in January »Weather in February
Transitioning into February, there is a slight rise in temperature with low and high averages moving from 59°F (15°C) to 68.9°F (20.5°C) respectively. Sunshine increases to 8.6 hours per day, serving as a cheery backdrop to the beautiful landscapes of Treasure Island. Weather in February »Weather in March
March ushers in more temperate climes, as the mercury fluctuates between 62.1°F (16.7°C) and 72.1°F (22.3°C). Compared to the previous month, the daylight hours increase to 12, allowing residents and visitors more time to indulge in outdoor hobbies. Weather in March »Weather in April
April witnesses a considerable upward shift in temperature, with the thermal needle swaying between 68°F (20°C) and 77.7°F (25.4°C). More sunshine graces the island during this period, illuminating the scenic beaches of Treasure Island. Weather in April »Weather in May
The heart of the Florida summer sets in May with temperatures reading from 73°F (22.8°C) to 82.2°F (27.9°C). Compared to April, the sunlight lasts longer at 13.5 daylight hours, making it the perfect month for sunbathers at the Treasure Island beach. Weather in May »Weather in June
June introduces the first wave of summer heat in Treasure Island with the temperature reaching between 73°F (22.8°C) and 85.8°F (29.9°C). Lengthy days and plenty of sunshine make it an attractive time of the year for tourists, despite the rise in precipitation. Weather in June »Weather in July
The sultriest stretch of the year, July, sees the temperature ranging from 79.9°F (26.6°C) to 87.3°F (30.7°C), hitting the highest point in the year. Longer sunshine hours mark the peak summer season in Treasure Island, yet the city copes well with the heat, thanks to the coastal breezes. Weather in July »Weather in August
August replicates July’s high temperatures, the mercury rising between 80.6°F (27°C) and 87.8°F (31°C). The intense sunshine sees a small downturn, commencing the slow descent towards shorter days. August rains keep up with July’s highs, with an average of 18.5 rainy days recorded in the city. Weather in August »Weather in September
September brings a slight relief from the summer highs, as temperatures fall between 77.9°F (25.5°C) and 86.5°F (30.3°C). The skies are less sunny compared to August, indicating the gradual transition towards the fall season. Weather in September »Weather in October
October witnesses a noticeable dip in temperature with readings ranging from 72.5°F (22.5°C) to 81.5°F (27.5°C). Daylight hours taper down, signaling the onset of the cooler, autumnal months. While rainfall takes a significant plunge, occurring only on approximately 9.9 days in the month—an affirmative sign of the receding monsoon. Weather in October »Weather in November
November indicates the onset of Florida’s mild winter with daily temperatures ranging from 64.9°F (18.3°C) to 75°F (23.9°C). Compared to October, the sun shines for shorter durations, casting longer shadows as the year winds down. Weather in November »Weather in December
December, being the coolest month, presents temperatures fluctuating between 61°F (16.1°C) and 70.7°F (21.5°C). The climate remains agreeable in comparison to more frigid regions of the United States. This period witnesses the least daylight hours, giving the island a softer, more gentle ambiance. Weather in December »Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
With average temperatures fluctuating between a high of 66.7°F (19.3°C) and a low of 56.3°F (13.5°C), January stands out as the coldest month.
Throughout the year, there are 122.3 rainfall days, and 9.45" (240mm) of precipitation is accumulated.
January is the month with the coldest seawater, with an average ocean temperature of 64°F (17.8°C).
The month with the lowest UV index is January, with an average maximum UV index of 4.
March is the month with the least rainfall. Rain falls for 5.6 days and accumulates 0.12" (3mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
May has the most sunshine of the year, with an average of 11.3h of sunshine.
May through September, with an average maximum UV index of 7, are months with the highest UV index.
With an average of 13h and 54min of daylight, June has the longest days of the year.
August, having an average high-temperature of 87.8°F (31°C) and an average low-temperature of 80.6°F (27°C), is the warmest month.
The month with the most rainfall is August, when the rain falls for 18.5 days and typically aggregates up to 1.85" (47mm) of precipitation.
With an average ocean temperature of 86.7°F (30.4°C), August is the month with the warmest seawater.
With an average relative humidity of 72%, October is the least humid month.
With an average relative humidity of 77%, December is the most humid month.
The month with the shortest days is December, with an average of 10h and 24min of daylight.
With an average of 6.6h of sunshine, December has the least sunshine of the year.
Average temperature
Treasure Island, FL
The warmest month (with the highest average high temperature) is August (87.8°F).
The month with the lowest average high temperature is January (66.7°F).
The month with the highest average low temperature is August (80.6°F).
The coldest month (with the lowest average low temperature) is January (56.3°F).
Average pressure
Treasure 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:
30.02"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.99"Hg
- Average pressure in July:
30.02"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed
Treasure Island, FL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.8mph - Average wind speed in April:
9.4mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
7mph - Average wind speed in August:
7.3mph - Average wind speed in September:
7.9mph - Average wind speed in October:
9.7mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.5mph
The windiest months (with the highest average wind speed) are January and November (9.9mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity
Treasure Island, FL
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Treasure Island, FL
- Average rainfall in January:
0.31" - Average rainfall in February:
0.31" - Average rainfall in March:
0.12" - Average rainfall in April:
0.51" - Average rainfall in May:
0.51" - Average rainfall in June:
1.38"
- Average rainfall in July:
1.73" - Average rainfall in August:
1.85" - Average rainfall in September:
1.02" - Average rainfall in October:
0.71" - Average rainfall in November:
0.31" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is August (1.85").
The driest month (with the least rainfall) is March (0.12").
Average rainfall days
Treasure Island, FL
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
5.6 days - Average rainfall days in March:
5.6 days - Average rainfall days in April:
6.9 days - Average rainfall days in May:
8.3 days - Average rainfall days in June:
14 days
- Average rainfall days in July:
18.1 days - Average rainfall days in August:
18.5 days - Average rainfall days in September:
17.5 days - Average rainfall days in October:
9.9 days - Average rainfall days in November:
5.8 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is August (18.5 days).
The months with the least rainy days are January, February and March (5.6 days).
Average sea temperature
Treasure Island, FL
The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64°F).
Average daylight / Average sunshine
Treasure 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 48min - Average daylight in May:
13h and 30min - 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 48min - 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:
7h and 24min - Average sunshine in February:
8h and 36min - Average sunshine in March:
8h and 48min - Average sunshine in April:
9h and 42min - Average sunshine in May:
11h and 18min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
11h and 6min - Average sunshine in August:
9h and 48min - Average sunshine in September:
9h and 12min - Average sunshine in October:
7h and 54min - Average sunshine in November:
6h and 48min - Average sunshine in December:
6h and 36min
The month with the most sunshine is May (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days
Treasure Island, FL
- Average sunshine days in January:
23.1 days - Average sunshine days in February:
21 days - Average sunshine days in March:
24.3 days - Average sunshine days in April:
21.7 days - Average sunshine days in May:
19.1 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
7.7 days - Average sunshine days in August:
5.6 days - Average sunshine days in September:
8 days - Average sunshine days in October:
18.6 days - Average sunshine days in November:
22.5 days - Average sunshine days in December:
22.6 days
The month with the most sunshine days is March (24.3 days).
The month with the least sunshine days is August (5.6 days).
Average UV index
Treasure 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
Treasure Island, FL
The months with the most cloud cover are January and December (Cloud cover 29).
The month with the least cloud cover is May (Cloud cover 20).
Average visibility
Treasure 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).
