March Weather in Key Largo, United States

Last updated: February 24, 2025

March in Key Largo, United States offers a delightful blend of warm temperatures and refreshing breezes. With a maximum temperature reaching a pleasant 26°C (80°F) and an average of 23°C (74°F), visitors can enjoy the balmy weather throughout the month. The minimum temperature dips to a cool 15°C (59°F), providing a comfortable respite at night. Rainfall is relatively light, with a total of 27 mm (1.0 in) spread over just 4 days, allowing for ample opportunities to explore the stunning natural beauty of the area. Featuring a humidity level of 76%, March promises a quintessential tropical experience, ideal for outdoor activities and relaxation.

March Temperature in Key Largo

In March, Key Largo embraces the early signs of spring with delightful warmth, as temperatures settle into a comfortable rhythm. The minimum temperature nudges up to 15°C (59°F), while the average hovers around 23°C (74°F), perfectly inviting for outdoor activities. The maximum remains steady at 26°C (80°F), offering ample opportunities to soak up the sunshine. This month marks a transitional phase, with conditions generally milder than the chill of January and February but not yet as warm as the approaching summer months. As winter recedes, March presents an ideal time to enjoy the beautiful beaches and vibrant marine life of this stunning destination.

March Weather in Key Largo: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Key Largo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec717474777981838382817774
Data source: Temperature data for Key Largo generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Key Largo

March in Key Largo typically sees 27 mm (1.0 in) of precipitation over 4 days, marking a relatively dry month compared to those preceding and following it. This trend of lower rainfall is consistent with the transition from winter into the wetter spring months, as April's precipitation nearly doubles to 47 mm (1.8 in) over more rainy days. As the year progresses, rainfall increases significantly, especially in May, where it surges to 155 mm (6.1 in) over 13 days. This pattern underscores the shift from the drier conditions of early winter to the more humid and rainfall-rich environment typical of Florida's spring and summer seasons. The moderate precipitation in March is an inviting prelude to the lush greenery and vibrant ecosystems that thrive in the region as the year continues.

March Precipitation Trends in Key Largo

The chart displays monthly precipitation patterns in Key Largo, with values for each month alongside March's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec313527471551121031081801428244
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Key Largo

In March, Key Largo experiences a humidity level of 76%, marking a gradual decline from the 81% in January and 79% in February. This trend suggests a shift towards slightly drier conditions as spring approaches, with humidity continuing to decrease into April at 73%. Such changes indicate a transitional phase, hinting at a more pleasant outdoor environment for visitors. The overall pattern reveals a gradual drop in humidity from the winter months, providing an ideal backdrop for enjoying Key Largo's beautiful scenery and activities as the year progresses.

March Average Humidity in Key Largo

This chart illustrates the average monthly humidity levels in Key Largo, with March's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how March's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec81%80%76%73%71%70%70%72%76%79%80%81%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Key Largo

In March, Key Largo experiences an extremely high UV Index of 11, indicating it's time to take serious precautions while enjoying the sunshine. With a burn time of just 10 minutes, the intensity of UV radiation is at its peak as the season transitions towards summer. This pattern of increasing UV levels from January's 6 to March's 11 reflects a trend of escalating sun exposure that continued into April and May, where the index reaches 12. As the weather warms up, awareness and protective measures are essential for safe outdoor activities. To learn more about the UV Index throughout the year, visit Key Largo UV Index.

Maximum UV Index Levels in Key Largo for March

The chart shows the monthly maximum UV Index (UVI) for Key Largo in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec69111212131212121086
Data source: Key Largo March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

March Sunshine in Key Largo

As March unfolds in Key Largo, the days become noticeably brighter, boasting an impressive 329 hours of sunshine. This vibrant shift marks a delightful transition from the cooler winter months, where sunlight gradually increases from 228 hours in January to a robust 283 hours in February. With April presenting an even sunnier disposition at 338 hours, March serves as the perfect precursor to the sun-drenched days ahead. This steady climb in sunshine hours not only enhances the charm of Key Largo but also invites outdoor adventures, making every moment feel infused with warmth and vitality. As spring sets in, the allure of longer, sunlit days beckons, promising unforgettable experiences under the radiant Key Largo sky.

Monthly Sunshine Duration in Key Largo: March Highlighted

The March sunshine duration represents the total number of hours Key Largo experiences direct sunlight during the month of March, excluding cloudy or obstructed periods. This chart compares the sunshine duration of March with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec228h283h329h338h329h319h347h342h317h305h281h290h
Data source: Key Largo March Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Key Largo During March

In Key Largo, the likelihood of sunny weather in March remains favorable, with a 66% chance of sunshine gracing the skies. As winter gives way to spring, March holds steady with a sun probability slightly lower than February's 67%, yet significantly higher than the summer months. Following this sunny trend, April experiences a slight drop to 58%, hinting that the best days of spring are just before the more unpredictable summer season, where sunshine chances plummet to around 16% in June. This consistent early spring sunshine makes March a delightful time for outdoor activities, enhancing the appeal of Key Largo as a serene escape from the winter chill elsewhere.

Percentage of Sunny Days in March in Key Largo

The chart illustrates the percentage of sunny days in Key Largo throughout the year, with March highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Key Largo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%67%66%58%57%16%26%28%34%50%46%69%
Data source: Key Largo March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Key Largo in March

As March unfolds in Key Largo, the days grow significantly longer, boasting 12 hours of daylight—a delightful increase compared to the 11 hours enjoyed in February. This transition marks a clear shift towards spring, where the allure of the warmer season becomes ever more enticing. With daylight hours reaching their peak in the following months, particularly in May and June with 13 hours each, residents and visitors can relish the extended opportunities for outdoor adventures. The gradual increase in sunlight not only enhances the beauty of the lush surroundings but also invites a sense of vitality as nature awakens from winter’s slumber. As the year progresses towards summer, the delightful trend of increasing daylight promises endless days of exploration and enjoyment in this tropical paradise.

Average Daylight Hours in Key Largo for March

The chart illustrates the variation in daylight duration in Key Largo throughout the year, with March highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 45m11h 18m12h 1m12h 45m13h 21m13h 39m13h 29m12h 57m12h 15m11h 31m10h 54m10h 35m
Data source: Key Largo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

March Winds in Key Largo

As March arrives in Key Largo, the wind begins to pick up slightly, with an average speed of 6.4 m/s (14 mph), making it one of the breeziest months of the year alongside February. This gentle increase from February's 6.2 m/s heralds the transition into spring, providing perfect conditions for outdoor activities like sailing and kayaking. Following March, the winds ease somewhat in April and May, settling around 5.7 m/s and 5.6 m/s respectively. This pattern showcases a peak in windiness that is ideal for adventurers looking to embrace the refreshing breezes of early spring while hinting at a gradual decline as summer approaches. With each passing month, the winds wane, emphasizing March as a prime time for enjoying Key Largo's vibrant marine landscape.

Average March Wind Speed in Key Largo

The chart displays monthly wind speed patterns in Key Largo, with values for each month shown alongside March's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how March's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.06.26.4 m/s5.75.65.34.24.93.25.05.34.7
Data source: Key Largo March wind data, generated using information from the Copernicus Climate Change Service.

How March Weather in Key Largo Compares to Other Months

The weather in Key Largo changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of March's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Key Largo and find detailed weather information for every month.

In comparing the weather of March to January, we see a rise in minimum temperatures, with March starting at 15°C (59°F) compared to January's cooler 10°C (50°F). While both months have the same maximum temperature of 26°C (80°F), March boasts a slightly higher average temperature of 23°C (74°F) versus January's 22°C (71°F). Precipitation is slightly less in March, totaling 27 mm (1.0 in) over 4 days, while January receives 31 mm (1.2 in) over 6 days. Additionally, humidity is slightly lower in March at 76%, compared to 81% in January. For more insights about January weather, check out Key Largo weather in January.

In comparing the weather of March and February, both months exhibit similar average temperatures, with March showing a minimum of 15°C (59°F) and February a slightly lower minimum of 14°C (57°F). The average and maximum temperatures remain consistent at 23°C (74°F) and 26°C (80°F) for both months, indicating a stable warmth. However, March experiences less precipitation, with 27 mm (1.0 in) over 4 rainy days compared to February's 35 mm (1.4 in) over 7 days. Additionally, humidity is slightly lower in March at 76%, compared to February's 79%. For more insights, you can check out Key Largo weather in February.

March and April both showcase mild and pleasant weather, though April tends to be slightly warmer and wetter. In March, temperatures range from a minimum of 15°C (59°F) to a maximum of 26°C (80°F), with an average of 23°C (74°F) and relatively low humidity at 76%. In contrast, April sees a minimum of 17°C (64°F) and a maximum of 28°C (83°F), averaging 25°C (77°F) while experiencing a decrease in humidity to 73%. Additionally, precipitation increases in April, with 47 mm (1.8 in) over 9 days compared to March’s 27 mm (1.0 in) spread across 4 days. For a more detailed look at this month’s weather, visit Key Largo weather in April.

In March, the weather is generally mild, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 26°C (80°F) and an average of 23°C (74°F). The month experiences low precipitation of 27 mm (1.0 in) over just 4 days, resulting in a relatively high humidity of 76%. In contrast, May brings warmer conditions, with minimum temperatures of 21°C (70°F) and maximums reaching up to 29°C (84°F), averaging 26°C (79°F). However, May is significantly wetter, accumulating 155 mm (6.1 in) of rain over 13 days, while the humidity slightly decreases to 71%. For a more detailed look at the weather trends, check out Key Largo weather in May.

In March, the weather is comparatively milder with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 26°C (80°F), providing an average of 23°C (74°F). The month experiences relatively low precipitation with only 27 mm (1.0 in) spread over 4 days and a higher humidity level of 76%. In contrast, June brings warmer temperatures, with a minimum of 24°C (75°F) and reaching a maximum of 30°C (87°F), averaging around 27°C (82°F). However, June also sees significant rainfall, accumulating 112 mm (4.4 in) over 18 days, alongside a drop in humidity to 69%. This shift indicates not only a transition to hotter weather but also a marked increase in precipitation. For more detailed information, check out Key Largo weather in June.

In March, the weather is generally milder with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 26°C (80°F) and an average of 23°C (74°F). The month sees about 27 mm (1.0 in) of precipitation over approximately 4 days, accompanied by a higher humidity level of 76%. In contrast, July brings significantly warmer temperatures, with a minimum of 25°C (78°F) and a maximum reaching 31°C (87°F), averaging 28°C (83°F). However, July is much wetter, experiencing 103 mm (4.1 in) of precipitation spread over 17 days while maintaining a slightly lower humidity of 70%. For more insights on July weather, check out Key Largo weather in July.

In March, the weather in Key Largo is generally mild, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 26°C (80°F) and an average of 23°C (74°F). There is relatively low precipitation of about 27 mm (1.0 in) over 4 days, and humidity tends to be higher at 76%. In contrast, August brings warmer conditions, with minimum temperatures reaching 25°C (78°F) and maximums around 30°C (87°F), resulting in an average of 28°C (83°F). However, it is also the wettest month, with 108 mm (4.3 in) of rainfall spread over 18 days and slightly lower humidity at 72%. For a more detailed look at August weather, check out Key Largo weather in August.

When comparing the weather in March and September, it's evident that September tends to be much warmer and wetter. In March, temperatures range from a minimum of 15°C (59°F) to a maximum of 26°C (80°F), with an average of 23°C (74°F) and relatively low precipitation of 27 mm (1.0 in) over just 4 days. In contrast, September features milder mornings with minimum temperatures around 25°C (77°F) and can reach highs of up to 30°C (87°F), averaging 28°C (83°F). However, it also brings significantly more rainfall, totaling 179 mm (7.1 in) across 18 days. Despite both months having a humidity level of 76%, September's increased heat and higher precipitation make it quite distinct from March. For more detailed insights, check out Key Largo weather in September.

March and October weather exhibit notable differences, with March experiencing milder temperatures ranging from a minimum of 15°C (59°F) to an average of 23°C (74°F), and maximums reaching 26°C (80°F). In contrast, October is warmer, with minimums at 18°C (65°F) and averages peaking at 27°C (81°F), alongside maximums of 29°C (85°F). Precipitation also varies significantly; March sees only 27 mm (1.0 in) over four days, while October experiences a much wetter climate, with 142 mm (5.6 in) over 18 days. The humidity levels are relatively similar, with March at 76% and October slightly higher at 79%. For more detailed insights, you can check the Key Largo weather in October.

In March, the weather is typically warm with average temperatures ranging from a minimum of 15°C (59°F) to a maximum of 26°C (80°F), accompanied by relatively low precipitation at 27 mm (1.0 in) over about 4 days. In contrast, November experiences slightly higher temperatures, with an average of 25°C (77°F) and maximums reaching 28°C (83°F), but it also sees a significant increase in precipitation, totaling 82 mm (3.2 in) over approximately 11 days. Additionally, humidity levels remain relatively close in both months, with March at 76% and November at 80%. For more details, you can visit Key Largo weather in November.

March and December share similar average temperatures, hovering around 23°C (74°F); however, March tends to be slightly warmer, with maximum temperatures reaching 26°C (80°F) compared to December's peak of 27°C (80°F). In terms of precipitation, December is wetter, receiving 44 mm (1.7 in) over eight days, while March has a relatively drier profile with only 27 mm (1.0 in) over four days. Humidity levels also rise slightly in December, averaging 81% opposed to 76% in March. For more detailed insights, you can check out Key Largo weather in December.

Compare Key Largo's Climate with Cities Worldwide

Conclusion: What to Expect From March Weather in Key Largo

As March unfolds in Key Largo, visitors can expect a delightful shift in weather, with milder temperatures that often invite both relaxation and adventure. Unlike the cooler winter months, March offers a pleasant average temperature hovering around 23°C (74°F), making it an ideal time for outdoor activities. The humidity, while noticeable at 76%, is balanced by refreshing breezes, and precipitation is minimal, with only a few rainy days scattered throughout the month. This transition into spring not only enhances the natural beauty of the area but also creates a perfect backdrop for exploring the stunning landscapes. Discover more about what to expect in this paradise by visiting Key Largo Climate.