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July Weather in San Juan Philippines

Daily high temperatures are around 88°F, rarely falling below 82°F or exceeding 92°F.

Daily low temperatures are around 77°F, rarely falling below 74°F or exceeding 80°F.

For reference, on April 26, the hottest day of the year, temperatures in San Juan typically range from 79°F to 93°F, while on January 21, the coldest day of the year, they range from 73°F to 86°F.

Average High and Low Temperature in July in San Juan

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 in San Juan

Average Hourly Temperature in July in San JuanJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJunAugwarmwarmhot
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Masachapa, Nicaragua (9,825 miles away); Santarém, Brazil (11,561 miles); and Maracanaú, Brazil (10,878 miles) are the far-away foreign places with temperatures most similar to San Juan (view comparison).

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The month of July in San Juan experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 92% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 92% on July 7.

The clearest day of the month is July 7, with clear, mostly clear, or partly cloudy conditions 8% of the time.

For reference, on June 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 94%, while on February 22, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 53%.

Cloud Cover Categories in July in San Juan

Cloud Cover Categories in July in San JuanJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAugJun 66%Jun 66%Jul 18%Jul 18%Jul 317%Jul 317%Jul 118%Jul 118%Jul 218%Jul 218%mostly cloudyovercastpartly cloudymostly clear
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In San Juan, the chance of a wet day over the course of July is increasing, starting the month at 62% and ending it at 68%.

For reference, the year's highest daily chance of a wet day is 69% on August 12, and its lowest chance is 13% on March 23.

Probability of Precipitation in July in San Juan

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).

Rainfall

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 Juan is very rapidly increasing, starting the month at 10.4 inches, when it rarely exceeds 16.1 inches or falls below 5.3 inches, and ending the month at 12.7 inches, when it rarely exceeds 18.9 inches or falls below 6.3 inches.

Average Monthly Rainfall in July in San Juan

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 snowfall.

Over the course of July in San Juan, the length of the day is essentially constant. The shortest day of the month is July 31, with 12 hours, 46 minutes of daylight and the longest day is July 1, with 12 hours, 59 minutes of daylight.

Hours of Daylight and Twilight in July in San Juan

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 Juan is 5:30 AM on July 1 and the latest sunrise is 9 minutes later at 5:38 AM on July 31.

The latest sunset is 6:29 PM on July 8 and the earliest sunset is 4 minutes earlier at 6:25 PM on July 31.

Daylight saving time is not observed in San Juan during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:27 AM and sets 13 hours, 0 minutes later, at 6:27 PM, while on December 21, the shortest day of the year, it rises at 6:16 AM and sets 11 hours, 16 minutes later, at 5:31 PM.

Sunrise & Sunset with Twilight in July in San Juan

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.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in July in San Juan

Solar Elevation and Azimuth in July in San JuanJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJunAug0010102020203030404050505060607070808080000101020203030304040505060606070708080
northeastsouthwest
Solar elevation and azimuth over the course of July 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for July 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. 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 in San Juan

Moon Rise, Set & Phases in July in San JuanJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJunAugJun 68:38 PMJun 68:38 PMJun 229:09 AMJun 229:09 AMJul 66:58 AMJul 66:58 AMJul 216:18 PMJul 216:18 PMAug 47:14 PMAug 47:14 PMAug 202:26 AMAug 202:26 AM4:46 AM4:46 AM6:17 PM6:17 PM5:53 PM5:53 PM5:16 AM5:16 AM5:28 AM5:28 AM7:00 PM7:00 PM6:35 PM6:35 PM6:09 AM6:09 AM5:13 AM5:13 AM6:28 PM6:28 PM6:04 PM6:04 PM5:55 AM5:55 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Jul 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
27%1:04 AMENE2:04 PMWNW-7:32 AMN231,485 mi
2
18%1:49 AMENE3:04 PMWNW-8:24 AMN232,786 mi
3
10%2:38 AMENE4:05 PMWNW-9:20 AMN234,410 mi
4
4%3:31 AMENE5:06 PMWNW-10:18 AMN236,354 mi
5
1%4:29 AMENE6:05 PMWNW-11:17 AMN238,581 mi
6
0%5:28 AMENE7:00 PMWNW-12:15 PMN241,009 mi
7
2%6:26 AMENE7:49 PMWNW-1:09 PMN243,510 mi
8
5%7:22 AMENE8:32 PMWNW-1:59 PMN245,925 mi
9
11%8:14 AMENE9:11 PMWNW-2:44 PMN248,073 mi
10
18%9:03 AMENE9:47 PMW-3:26 PMS249,779 mi
11
26%9:50 AME10:20 PMW-4:06 PMS250,883 mi
12
35%10:35 AME10:53 PMW-4:44 PMS251,260 mi
13
45%11:20 AME11:26 PMW-5:23 PMS250,832 mi
14
50%12:06 PME--6:03 PMS249,579 mi
15
64%-12:00 AMWSW12:54 PMESE6:45 PMS247,545 mi
16
74%-12:38 AMWSW1:45 PMESE7:32 PMS244,846 mi
17
82%-1:20 AMWSW2:40 PMESE8:23 PMS241,662 mi
18
90%-2:08 AMWSW3:38 PMESE9:19 PMS238,234 mi
19
96%-3:02 AMWSW4:38 PMESE10:20 PMS234,845 mi
20
99%-4:01 AMWSW5:38 PMESE11:22 PMS231,789 mi
21
100%-5:04 AMWSW6:35 PMESE--
22
100%-6:09 AMWSW7:27 PMESE12:22 AMS229,328 mi
23
98%-7:11 AMWSW8:15 PMESE1:20 AMS227,649 mi
24
93%-8:12 AMWSW8:58 PME2:14 AMS226,834 mi
25
85%-9:09 AMW9:40 PME3:04 AMS226,862 mi
26
75%-10:06 AMW10:21 PME3:52 AMS227,628 mi
27
64%-11:02 AMW11:03 PMENE4:40 AMS228,979 mi
28
50%-11:59 AMWNW11:47 PMENE5:29 AMS230,747 mi
29
41%-12:58 PMWNW-6:20 AMN232,780 mi
30
30%12:34 AMENE1:58 PMWNW-7:14 AMN234,961 mi
31
20%1:26 AMENE2:59 PMWNW-8:11 AMN237,207 mi

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 Juan is essentially constant during July, remaining around 100% throughout.

For reference, on July 15, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 22, the least muggy day of the year, there are muggy conditions 90% of the time.

Humidity Comfort Levels in July in San Juan

Humidity Comfort Levels in July in San JuanJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JunAugJul 1100%Jul 1100%Jul 31100%Jul 31100%Jul 11100%Jul 11100%Jul 21100%Jul 21100%miserablemiserableoppressiveoppressivemuggymuggy
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Juan is gradually increasing during July, increasing from 6.4 miles per hour to 7.2 miles per hour over the course of the month.

For reference, on December 17, the windiest day of the year, the daily average wind speed is 9.7 miles per hour, while on May 30, the calmest day of the year, the daily average wind speed is 5.7 miles per hour.

Average Wind Speed in July in San Juan

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in San Juan throughout July is predominantly from the west, with a peak proportion of 59% on July 31.

Wind Direction in July in San Juan

Wind Direction in July in San JuanJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JunAugwestsoutheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

San Juan 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 Juan is essentially constant during July, remaining within 1°F of 85°F throughout.

Average Water Temperature in July in San Juan

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

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 in San Juan 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 in San Juan

Time Spent in Various Temperature Bands and the Growing Season in July in San JuanJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAug100%Jul 16100%Jul 16100%Jul 2100%Jul 2warmhotcomfortable
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 percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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.

The average accumulated growing degree days in San Juan are very rapidly increasing during July, increasing by 940°F, from 5,684°F to 6,624°F, over the course of the month.

Growing Degree Days in July in San Juan

Growing Degree Days in July in San JuanJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031315,600°F5,600°F5,800°F5,800°F6,000°F6,000°F6,200°F6,200°F6,400°F6,400°F6,600°F6,600°F6,800°F6,800°FJunAugJul 15,684°FJul 15,684°FJul 316,624°FJul 316,624°FJul 115,998°FJul 115,998°FJul 216,311°FJul 216,311°F
The average growing degree days accumulated over the course of July, with 25th to 75th and 10th to 90th percentile bands.

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 Juan is essentially constant during July, remaining around 4.0 kWh throughout.

Average Daily Incident Shortwave Solar Energy in July in San Juan

Average Daily Incident Shortwave Solar Energy in July in San JuanJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhJunAugJul 14.1 kWhJul 14.1 kWhJul 314.0 kWhJul 314.0 kWhJul 114.1 kWhJul 114.1 kWhJul 214.0 kWhJul 214.0 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 Juan are 14.600 deg latitude, 121.033 deg longitude, and 66 ft elevation.

The topography within 2 miles of San Juan contains only modest variations in elevation, with a maximum elevation change of 207 feet and an average elevation above sea level of 73 feet. Within 10 miles contains only modest variations in elevation (1,463 feet). Within 50 miles contains very significant variations in elevation (7,241 feet).

The area within 2 miles of San Juan is covered by artificial surfaces (93%), within 10 miles by artificial surfaces (62%) and water (28%), and within 50 miles by water (32%) and cropland (29%).

This report illustrates the typical weather in San Juan, 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 San Juan.

For each station, the records are corrected for the elevation difference between that station and San Juan 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 San Juan is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between San Juan and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of San Juan and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

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.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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