Climate and Average Weather Year Round in Indian River Shores United States

In Indian River Shores, the summers are long, hot, oppressive, wet, and mostly cloudy and the winters are short, cool, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 53°F to 90°F and is rarely below 39°F or above 93°F.

Based on the tourism score, the best times of year to visit Indian River Shores for warm-weather activities are from late February to mid May and from late October to mid December.

The hot season lasts for 4.1 months, from May 24 to September 29, with an average daily high temperature above 86°F. The hottest month of the year in Indian River Shores is July, with an average high of 89°F and low of 74°F.

The cool season lasts for 2.8 months, from December 5 to February 29, with an average daily high temperature below 75°F. The coldest month of the year in Indian River Shores is January, with an average low of 53°F and high of 72°F.

In Indian River Shores, 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 in Indian River Shores begins around October 3 and lasts for 8.0 months, ending around June 4.

The clearest month of the year in Indian River Shores is April, during which on average the sky is clear, mostly clear, or partly cloudy 64% of the time.

The cloudier part of the year begins around June 4 and lasts for 4.0 months, ending around October 3.

The cloudiest month of the year in Indian River Shores is July, during which on average the sky is overcast or mostly cloudy 68% 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 in Indian River Shores varies significantly throughout the year.

The wetter season lasts 4.4 months, from May 27 to October 7, with a greater than 40% chance of a given day being a wet day. The month with the most wet days in Indian River Shores is August, with an average of 18.6 days with at least 0.04 inches of precipitation.

The drier season lasts 7.6 months, from October 7 to May 27. The month with the fewest wet days in Indian River Shores is December, with an average of 5.6 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 in Indian River Shores is August, 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 August 22.

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. Indian River Shores experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Indian River Shores. The month with the most rain in Indian River Shores is August, with an average rainfall of 5.5 inches.

The month with the least rain in Indian River Shores is December, with an average rainfall of 1.8 inches.

The length of the day in Indian River Shores varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 23 minutes of daylight; the longest day is June 20, with 13 hours, 54 minutes of daylight.

The earliest sunrise is at 6:25 AM on June 9, and the latest sunrise is 1 hour, 11 minutes later at 7:35 AM on March 10. The earliest sunset is at 5:26 PM on November 30, and the latest sunset is 2 hours, 55 minutes later at 8:21 PM on July 1.

Daylight saving time (DST) is observed in Indian River Shores 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.

Indian River Shores experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.0 months, from April 17 to November 19, during which time the comfort level is muggy, oppressive, or miserable at least 35% of the time. The month with the most muggy days in Indian River Shores is August, with 30.9 days that are muggy or worse.

The month with the fewest muggy days in Indian River Shores is February, with 4.7 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 in Indian River Shores experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.8 months, from September 29 to May 24, with average wind speeds of more than 9.4 miles per hour. The windiest month of the year in Indian River Shores is March, with an average hourly wind speed of 11.5 miles per hour.

The calmer time of year lasts for 4.2 months, from May 24 to September 29. The calmest month of the year in Indian River Shores is July, with an average hourly wind speed of 7.2 miles per hour.

The predominant average hourly wind direction in Indian River Shores varies throughout the year.

The wind is most often from the north for 1.2 months, from January 5 to February 10, with a peak percentage of 30% on January 25. The wind is most often from the east for 4.2 months, from February 10 to June 15 and for 4.8 months, from August 11 to January 5, with a peak percentage of 50% on May 17. The wind is most often from the south for 1.9 months, from June 15 to August 11, with a peak percentage of 45% on July 19.

Indian River Shores 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 3.9 months, from June 17 to October 15, with an average temperature above 82°F. The month of the year in Indian River Shores with the warmest water is August, with an average temperature of 84°F.

The time of year with cooler water lasts for 3.4 months, from December 26 to April 8, with an average temperature below 75°F. The month of the year in Indian River Shores with the coolest water is February, with an average temperature of 73°F.

To characterize how pleasant the weather is in Indian River Shores 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 Indian River Shores for general outdoor tourist activities are from late February to mid May and from late October to mid December, with a peak score in the third 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 Indian River Shores for hot-weather activities are from late April to early June and from late September to late 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).

While it does not do so every year, freezing temperatures are seen in Indian River Shores over some winters. The day least likely to be in the growing season is January 16, with a 64% chance.

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.

Based on growing degree days alone, the first spring blooms in Indian River Shores should appear around January 8, only rarely appearing before January 6 or after January 13.

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 1.9 months, from April 2 to May 31, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest month of the year in Indian River Shores is May, with an average of 6.5 kWh.

The darker period of the year lasts for 2.7 months, from November 7 to January 30, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest month of the year in Indian River Shores is December, with an average of 3.5 kWh.

For the purposes of this report, the geographical coordinates of Indian River Shores are 27.717 deg latitude, -80.384 deg longitude, and 3 ft elevation.

The topography within 2 miles of Indian River Shores is essentially flat, with a maximum elevation change of 13 feet and an average elevation above sea level of 2 foot. Within 10 miles is also essentially flat (43 feet). Within 50 miles is also essentially flat (82 feet).

The area within 2 miles of Indian River Shores is covered by water (50%), artificial surfaces (28%), and mangroves (12%), within 10 miles by water (54%) and artificial surfaces (28%), and within 50 miles by water (54%) and cropland (20%).