Climate and Average Weather Year Round at Grand Isle B95 United States

At Grand Isle B95, the summers are hot, oppressive, and mostly cloudy; the winters are comfortable, windy, and partly cloudy; and it is wet year round. Over the course of the year, the temperature typically varies from 59°F to 90°F and is rarely below 48°F or above 92°F.

Based on the beach/pool score, the best times of year to visit Grand Isle B95 for hot-weather activities are from mid April to late May and for the entire month of October.

The hot season lasts for 3.7 months, from June 3 to September 23, with an average daily high temperature above 86°F. The hottest month of the year at Grand Isle B95 is August, with an average high of 89°F and low of 84°F.

The cool season lasts for 3.3 months, from December 5 to March 15, with an average daily high temperature below 74°F. The coldest month of the year at Grand Isle B95 is January, with an average low of 59°F and high of 71°F.

At Grand Isle B95, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Grand Isle B95 begins around September 12 and lasts for 9.3 months, ending around June 20.

The clearest month of the year at Grand Isle B95 is April, during which on average the sky is clear, mostly clear, or partly cloudy 61% of the time.

The cloudier part of the year begins around June 20 and lasts for 2.7 months, ending around September 12.

The cloudiest month of the year at Grand Isle B95 is July, during which on average the sky is overcast or mostly cloudy 63% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Grand Isle B95 varies significantly throughout the year.

The wetter season lasts 3.2 months, from June 8 to September 16, with a greater than 44% chance of a given day being a wet day. The month with the most wet days at Grand Isle B95 is July, with an average of 18.6 days with at least 0.04 inches of precipitation.

The drier season lasts 8.8 months, from September 16 to June 8. The month with the fewest wet days at Grand Isle B95 is November, with an average of 8.4 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone at Grand Isle B95 is July, with an average of 18.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 63% on July 28.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Grand Isle B95 experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year at Grand Isle B95. The month with the most rain at Grand Isle B95 is August, with an average rainfall of 5.5 inches.

The month with the least rain at Grand Isle B95 is May, with an average rainfall of 3.5 inches.

The length of the day at Grand Isle B95 varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 20 minutes of daylight; the longest day is June 20, with 13 hours, 58 minutes of daylight.

The earliest sunrise is at 7:02 AM on June 9, and the latest sunrise is 1 hour, 13 minutes later at 8:15 AM on March 10. The earliest sunset is at 6:03 PM on December 1, and the latest sunset is 2 hours, 59 minutes later at 9:02 PM on June 30.

Daylight saving time (DST) is observed at Grand Isle B95 during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Grand Isle B95 experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.9 months, from March 17 to November 15, during which time the comfort level is muggy, oppressive, or miserable at least 41% of the time. The month with the most muggy days at Grand Isle B95 is July, with 30.9 days that are muggy or worse.

The month with the fewest muggy days at Grand Isle B95 is January, with 7.5 days that are muggy or worse.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Grand Isle B95 experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.8 months, from September 16 to May 10, with average wind speeds of more than 11.5 miles per hour. The windiest month of the year at Grand Isle B95 is January, with an average hourly wind speed of 14.8 miles per hour.

The calmer time of year lasts for 4.2 months, from May 10 to September 16. The calmest month of the year at Grand Isle B95 is July, with an average hourly wind speed of 8.3 miles per hour.

The predominant average hourly wind direction at Grand Isle B95 varies throughout the year.

The wind is most often from the east for 3.1 months, from February 22 to May 25 and for 3.3 months, from August 10 to November 18, with a peak percentage of 54% on September 21. The wind is most often from the south for 1.9 months, from May 25 to July 21 and for 3.0 days, from August 7 to August 10, with a peak percentage of 45% on June 20. The wind is most often from the north for 3.1 months, from November 18 to February 22, with a peak percentage of 38% on January 1.

Grand Isle B95 is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.7 months, from June 9 to September 30, with an average temperature above 82°F. The month of the year at Grand Isle B95 with the warmest water is August, with an average temperature of 85°F.

The time of year with cooler water lasts for 3.7 months, from December 15 to April 5, with an average temperature below 71°F. The month of the year at Grand Isle B95 with the coolest water is February, with an average temperature of 67°F.

To characterize how pleasant the weather is at Grand Isle B95 throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Grand Isle B95 for general outdoor tourist activities are from late February to early May and from late October to early December, with a peak score in the first week of April.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Grand Isle B95 for hot-weather activities are from mid April to late May and for the entire month of October, with a peak score in the second week of May.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures at Grand Isle B95 are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 2.5 months, from March 31 to June 14, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest month of the year at Grand Isle B95 is May, with an average of 6.5 kWh.

The darker period of the year lasts for 2.5 months, from November 15 to February 1, with an average daily incident shortwave energy per square meter below 3.8 kWh. The darkest month of the year at Grand Isle B95 is December, with an average of 3.2 kWh.

For the purposes of this report, the geographical coordinates of Grand Isle B95 are 28.500 deg latitude, -90.117 deg longitude, and 0 ft elevation.

The topography within 2 miles of Grand Isle B95 is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (7 feet).

The area within 2 miles of Grand Isle B95 is covered by water (100%), within 10 miles by water (100%), and within 50 miles by water (99%).