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Average Weather in July in San Ignacio Costa Rica

In San Ignacio, the month of July is characterized by essentially constant daily high temperatures, with daily highs around 78°F throughout the month, rarely exceeding 81°F or dropping below 74°F.

Daily low temperatures are around 65°F, rarely falling below 63°F or exceeding 68°F. The highest daily average low temperature is 65°F on July 13.

For reference, on March 28, the hottest day of the year, temperatures in San Ignacio typically range from 65°F to 81°F, while on October 2, the coldest day of the year, they range from 64°F to 77°F.

Average High and Low Temperature in July

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in July in San Ignacio18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM4 AM8 AM12 PM4 PM8 PM12 AMJunAugwarmcomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.


The month of July in San Ignacio experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 93% throughout the month.

The clearest day of the month is July 31, with clear, mostly clear, or partly cloudy conditions 8% of the time.

For reference, on June 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 96%, while on January 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.

Cloud Cover Categories in July

Cloud Cover Categories in July in San Ignacio1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAugJul 16%Jul 16%Jul 318%Jul 318%Jul 117%Jul 117%Jul 217%Jul 217%mostly cloudyovercastpartly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.


A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In San Ignacio, the chance of a wet day over the course of July is rapidly decreasing, starting the month at 45% and ending it at 39%.

For reference, the year's highest daily chance of a wet day is 52% on October 7, and its lowest chance is 6% on March 16.

Probability of Precipitation in July

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).


To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during July in San Ignacio is gradually decreasing, starting the month at 5.1 inches, when it rarely exceeds 9.1 inches or falls below 2.0 inches, and ending the month at 4.8 inches, when it rarely exceeds 9.2 inches or falls below 2.1 inches.

The lowest average 31-day accumulation is 4.7 inches on July 24.

Average Monthly Rainfall in July

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.


Over the course of July in San Ignacio, the length of the day is essentially constant. The shortest day of the month is July 31, with 12 hours, 33 minutes of daylight and the longest day is July 1, with 12 hours, 41 minutes of daylight.

Hours of Daylight and Twilight in July

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in San Ignacio is 5:19 AM on July 1 and the latest sunrise is 7 minutes later at 5:26 AM on July 31.

The latest sunset is 6:01 PM on July 12 and the earliest sunset is 2 minutes, 28 seconds earlier at 5:59 PM on July 31.

Daylight saving time is not observed in San Ignacio during 2017.

For reference, on June 21, the longest day of the year, the Sun rises at 5:17 AM and sets 12 hours, 42 minutes later, at 5:59 PM, while on December 21, the shortest day of the year, it rises at 5:48 AM and sets 11 hours, 33 minutes later, at 5:21 PM.

Sunrise & Sunset with Twilight in July

The solar day over the course of July. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.


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.

The chance that a given day will be muggy in San Ignacio is decreasing during July, falling from 56% to 49% over the course of the month.

The lowest chance of a muggy day during July is 48% on July 18.

For reference, on June 2, the muggiest day of the year, there are muggy conditions 69% of the time, while on January 24, the least muggy day of the year, there are muggy conditions 4% of the time.

Humidity Comfort Levels in July

Humidity Comfort Levels in July in San Ignacio1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%10%20%30%40%50%60%70%80%90%100%JunAugJul 1848%Jul 1848%Jul 156%Jul 156%Jul 3149%Jul 3149%Jul 1151%Jul 1151%humidhumidmuggymuggyoppressiveoppressivecomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.


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 San Ignacio is essentially constant during July, remaining within 0.1 miles per hour of 2.0 miles per hour throughout.

For reference, on October 8, the windiest day of the year, the daily average wind speed is 2.9 miles per hour, while on December 9, the calmest day of the year, the daily average wind speed is 1.8 miles per hour.

The lowest daily average wind speed during July is 1.9 miles per hour on July 23.

Average Wind Speed in July

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The wind direction in San Ignacio during July is predominantly out of the west from July 1 to July 9 and from July 28 to July 31 and the south from July 9 to July 28.

Wind Direction in July

Wind Direction in July in San IgnacioWSW1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAugeastwestnorthsouth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

San Ignacio 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 San Ignacio is essentially constant during July, remaining around 84°F throughout.

Average Water Temperature in July

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 in San Ignacio is essentially constant during July, remaining within 0.1 kWh of 3.9 kWh throughout.

Average Daily Incident Shortwave Solar Energy in July

Average Daily Incident Shortwave Solar Energy in July in San Ignacio1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.5 kWh1.0 kWh1.5 kWh2.0 kWh2.5 kWh3.0 kWh3.5 kWh4.0 kWh4.5 kWh5.0 kWh5.5 kWh6.0 kWhJunAugJul 13.8 kWhJul 13.8 kWhJul 314.0 kWhJul 314.0 kWhJul 113.9 kWhJul 113.9 kWhJul 213.9 kWhJul 213.9 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.


For the purposes of this report, the geographical coordinates of San Ignacio are 9.799 deg latitude, -84.162 deg longitude, and 3,675 ft elevation.

The topography within 2 miles of San Ignacio contains extreme variations in elevation, with a maximum elevation change of 3,839 feet and an average elevation above sea level of 3,599 feet. Within 10 miles also contains extreme variations in elevation (7,306 feet). Within 50 miles also contains extreme variations in elevation (12,490 feet).

The area within 2 miles of San Ignacio is covered by trees (54%), grassland (26%), and shrubs (13%), within 10 miles by trees (48%) and grassland (32%), and within 50 miles by trees (43%) and water (28%).

Data Sources

This report illustrates the typical weather in San Ignacio year round, 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 is only a single weather station, Juan Santamaría International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of San Ignacio.

At a distance of 22 kilometers from San Ignacio, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and San Ignacio according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.


The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.