Average Weather in July in Ceiba Puerto Rico
Daily high temperatures are around 89°F, rarely falling below 86°F or exceeding 91°F.
Daily low temperatures are around 77°F, rarely falling below 74°F or exceeding 79°F.
For reference, on August 4, the hottest day of the year, temperatures in Ceiba typically range from 77°F to 89°F, while on January 25, the coldest day of the year, they range from 70°F to 83°F.
Average High and Low Temperature in July
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in July
The month of July in Ceiba experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 62% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 61% on July 31.
The clearest day of the month is July 31, with clear, mostly clear, or partly cloudy conditions 39% of the time.
For reference, on May 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 73%, while on January 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 82%.
Cloud Cover Categories in July
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Ceiba, the chance of a wet day over the course of July is increasing, starting the month at 30% and ending it at 35%.
For reference, the year's highest daily chance of a wet day is 50% on September 27, and its lowest chance is 19% on January 9.
Probability of Precipitation in July
The average sliding 31-day rainfall during July in Ceiba is increasing, starting the month at 2.0 inches, when it rarely exceeds 4.7 inches or falls below 0.2 inches, and ending the month at 2.5 inches, when it rarely exceeds 5.2 inches or falls below 0.7 inches.
The lowest average 31-day accumulation is 2.0 inches on July 2.
Average Monthly Rainfall in July
Over the course of July in Ceiba, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 16 minutes, implying an average daily decrease of 31 seconds, and weekly decrease of 3 minutes, 40 seconds.
The shortest day of the month is July 31, with 12 hours, 57 minutes of daylight and the longest day is July 1, with 13 hours, 13 minutes of daylight.
Hours of Daylight and Twilight in July
The earliest sunrise of the month in Ceiba is 5:52 AM on July 1 and the latest sunrise is 10 minutes later at 6:02 AM on July 31.
The latest sunset is 7:06 PM on July 5 and the earliest sunset is 6 minutes earlier at 7:00 PM on July 31.
Daylight saving time is not observed in Ceiba during 2021.
For reference, on June 21, the longest day of the year, the Sun rises at 5:50 AM and sets 13 hours, 14 minutes later, at 7:04 PM, while on December 21, the shortest day of the year, it rises at 6:52 AM and sets 11 hours, 1 minute later, at 5:54 PM.
Sunrise & Sunset with Twilight in July
The figure below presents a compact representation of key lunar data for July 2021. 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
Moon Rise, Set & Phases in July
The chance that a given day will be muggy in Ceiba is essentially constant during July, remaining around 100% throughout.
For reference, on June 2, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 6, the least muggy day of the year, there are muggy conditions 79% of the time.
Humidity Comfort Levels in July
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Ceiba is essentially constant during July, remaining within 0.2 miles per hour of 12.1 miles per hour throughout.
For reference, on July 14, the windiest day of the year, the daily average wind speed is 12.2 miles per hour, while on October 10, the calmest day of the year, the daily average wind speed is 9.1 miles per hour.
The highest daily average wind speed during July is 12.2 miles per hour on July 15.
Average Wind Speed in July
The hourly average wind direction in Ceiba throughout July is predominantly from the east, with a peak proportion of 99% on July 13.
Wind Direction in July
Ceiba 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 surface water temperature in Ceiba is essentially constant during July, remaining around 83°F throughout.
Average Water Temperature in July
Temperatures in Ceiba 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.
Time Spent in Various Temperature Bands and the Growing Season in July
The average accumulated growing degree days in Ceiba are very rapidly increasing during July, increasing by 950°F, from 5,119°F to 6,070°F, over the course of the month.
Growing Degree Days in July
The average daily incident shortwave solar energy in Ceiba is essentially constant during July, remaining within 0.1 kWh of 5.6 kWh throughout.
The highest average daily incident shortwave solar energy during July is 5.7 kWh on July 24.
Average Daily Incident Shortwave Solar Energy in July
For the purposes of this report, the geographical coordinates of Ceiba are 18.446 deg latitude, -66.351 deg longitude, and 26 ft elevation.
The topography within 2 miles of Ceiba contains only modest variations in elevation, with a maximum elevation change of 427 feet and an average elevation above sea level of 75 feet. Within 10 miles contains only modest variations in elevation (1,332 feet). Within 50 miles contains very significant variations in elevation (4,390 feet).
The area within 2 miles of Ceiba is covered by trees (37%), cropland (25%), grassland (25%), and shrubs (14%), within 10 miles by water (43%) and trees (26%), and within 50 miles by water (68%) and trees (17%).
This report illustrates the typical weather in Ceiba, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Ceiba.
For each station, the records are corrected for the elevation difference between that station and Ceiba according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Ceiba is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Ceiba and a given station.
The stations contributing to this reconstruction are: Luis Muñoz Marín International Airport (55%, 36 kilometers, east); Mercedita Airport (30%, 54 kilometers, southwest); and Rafael Hernandez Airport (16%, 82 kilometers, west).
Time zones for airports and weather stations are provided by AskGeo.com .