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January Weather in San Rafael Peru

Daily high temperatures are around 91°F, rarely falling below 84°F or exceeding 97°F. The highest daily average high temperature is 92°F on January 16.

Daily low temperatures are around 75°F, rarely falling below 72°F or exceeding 77°F.

For reference, on September 6, the hottest day of the year, temperatures in San Rafael typically range from 74°F to 96°F, while on July 5, the coldest day of the year, they range from 71°F to 91°F.

Average High and Low Temperature in January in San Rafael

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 January. 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 January in San Rafael

Average Hourly Temperature in January in San RafaelJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFebcomfortablewarmwarmwarmhot
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.

Kumalarang, Philippines (11,104 miles away) is the far-away foreign place with temperatures most similar to San Rafael (view comparison).

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The month of January in San Rafael experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 77% to 82%.

The clearest day of the month is January 1, with clear, mostly clear, or partly cloudy conditions 23% of the time.

For reference, on February 14, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 84%, while on July 31, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.

Cloud Cover Categories in January in San Rafael

Cloud Cover Categories in January in San RafaelJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 123%Jan 123%Jan 3118%Jan 3118%Jan 1121%Jan 1121%Jan 2119%Jan 2119%mostly clearpartly cloudymostly cloudyovercastclear
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 Rafael, the chance of a wet day over the course of January is increasing, starting the month at 29% and ending it at 34%.

For reference, the year's highest daily chance of a wet day is 41% on February 25, and its lowest chance is 14% on August 9.

Probability of Precipitation in January in San Rafael

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 January in San Rafael is increasing, starting the month at 2.5 inches, when it rarely exceeds 5.1 inches or falls below 0.7 inches, and ending the month at 3.1 inches, when it rarely exceeds 5.7 inches or falls below 0.7 inches.

The lowest average 31-day accumulation is 2.5 inches on January 8.

Average Monthly Rainfall in January in San Rafael

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 January in San Rafael, the length of the day is essentially constant. The shortest day of the month is January 31, with 12 hours, 25 minutes of daylight and the longest day is January 1, with 12 hours, 32 minutes of daylight.

Hours of Daylight and Twilight in January in San Rafael

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 Rafael is 5:53 AM on January 1 and the latest sunrise is 13 minutes later at 6:06 AM on January 31.

The earliest sunset is 6:25 PM on January 1 and the latest sunset is 7 minutes later at 6:31 PM on January 31.

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

For reference, on December 21, the longest day of the year, the Sun rises at 5:48 AM and sets 12 hours, 32 minutes later, at 6:20 PM, while on June 20, the shortest day of the year, it rises at 6:16 AM and sets 11 hours, 43 minutes later, at 5:59 PM.

Sunrise & Sunset with Twilight in January in San Rafael

The solar day over the course of January. 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 January in San Rafael

Solar Elevation and Azimuth in January in San RafaelJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFeb00101020202030304040505050606070708000010102020303030404050506060607070
northeastsouthwest
Solar elevation and azimuth over the course of January 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 January 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 January in San Rafael

Moon Rise, Set & Phases in January in San RafaelJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 126:33 PMDec 126:33 PMDec 267:34 PMDec 267:34 PMJan 116:58 AMJan 116:58 AMJan 2512:55 PMJan 2512:55 PMFeb 96:00 PMFeb 96:00 PMFeb 247:31 AMFeb 247:31 AM5:12 AM5:12 AM6:12 PM6:12 PM6:19 PM6:19 PM6:16 AM6:16 AM6:00 AM6:00 AM7:00 PM7:00 PM6:46 PM6:46 PM6:46 AM6:46 AM5:46 AM5:46 AM6:36 PM6:36 PM6:09 PM6:09 PM6:15 AM6:15 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.
Jan 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
75%-10:22 AMW10:50 PME4:18 AMN251,576 mi
2
66%-11:04 AMW11:26 PME4:57 AMN251,376 mi
3
50%-11:46 AMW-5:36 AMN250,357 mi
4
47%12:02 AME12:29 PMW-6:15 AMN248,514 mi
5
37%12:40 AME1:14 PMWSW-6:56 AMS245,913 mi
6
28%1:21 AMESE2:02 PMWSW-7:40 AMS242,692 mi
7
18%2:06 AMESE2:55 PMWSW-8:29 AMS239,065 mi
8
11%2:57 AMESE3:53 PMWSW-9:24 AMS235,310 mi
9
5%3:53 AMESE4:55 PMWSW-10:23 AMS231,752 mi
10
1%4:55 AMESE5:58 PMWSW-11:27 AMS228,727 mi
11
0%6:00 AMESE7:00 PMWSW-12:31 PMS226,520 mi
12
2%7:04 AMESE7:58 PMWSW-1:33 PMS225,317 mi
13
7%8:06 AMESE8:51 PMWSW-2:30 PMS225,166 mi
14
15%9:03 AMESE9:40 PMW-3:23 PMS225,983 mi
15
25%9:58 AME10:26 PMW-4:12 PMN227,591 mi
16
36%10:50 AME11:10 PMW-5:00 PMN229,763 mi
17
50%11:41 AME11:55 PMWNW-5:47 PMN232,268 mi
18
59%12:32 PMENE--6:36 PMN234,908 mi
19
70%-12:40 AMWNW1:25 PMENE7:26 PMN237,534 mi
20
79%-1:29 AMWNW2:20 PMENE8:19 PMN240,052 mi
21
87%-2:20 AMWNW3:16 PMENE9:14 PMN242,412 mi
22
93%-3:13 AMWNW4:12 PMENE10:10 PMN244,590 mi
23
98%-4:08 AMWNW5:07 PMENE11:05 PMN246,573 mi
24
100%-5:03 AMWNW5:58 PMENE11:58 PMN248,341 mi
25
100%-5:56 AMWNW6:46 PMENE--
26
100%-6:46 AMWNW7:30 PMENE12:47 AMN249,855 mi
27
98%-7:33 AMWNW8:10 PMENE1:32 AMN251,052 mi
28
94%-8:18 AMW8:48 PME2:14 AMN251,846 mi
29
89%-9:00 AMW9:24 PME2:54 AMN252,139 mi
30
82%-9:42 AMW10:00 PME3:33 AMN251,832 mi
31
74%-10:24 AMW10:37 PME4:11 AMN250,839 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 Rafael is essentially constant during January, remaining within 1% of 81% throughout.

The lowest chance of a muggy day during January is 80% on January 12.

For reference, on April 11, the muggiest day of the year, there are muggy conditions 92% of the time, while on August 19, the least muggy day of the year, there are muggy conditions 32% of the time.

Humidity Comfort Levels in January in San Rafael

Humidity Comfort Levels in January in San RafaelJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 1280%Jan 1280%Jan 181%Jan 181%Jan 3182%Jan 3182%Jan 2181%Jan 2181%oppressiveoppressivemuggymuggyhumidhumid
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 Rafael is essentially constant during January, remaining within 0.1 miles per hour of 2.0 miles per hour throughout.

For reference, on January 11, the windiest day of the year, the daily average wind speed is 2.0 miles per hour, while on April 14, the calmest day of the year, the daily average wind speed is 1.6 miles per hour.

The highest daily average wind speed during January is 2.0 miles per hour on January 11.

Average Wind Speed in January in San Rafael

Average Wind Speed in January in San RafaelJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 mph0.0 mph0.5 mph0.5 mph1.0 mph1.0 mph1.5 mph1.5 mph2.0 mph2.0 mph2.5 mph2.5 mph3.0 mph3.0 mph3.5 mph3.5 mphDecFebJan 112.0 mphJan 112.0 mphJan 12.0 mphJan 12.0 mphJan 311.9 mphJan 311.9 mphJan 212.0 mphJan 212.0 mph
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 Rafael throughout January is predominantly from the north, with a peak proportion of 58% on January 11.

Wind Direction in January in San Rafael

Wind Direction in January in San RafaelNEJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebeastnorthwest
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).

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 Rafael 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 January in San Rafael

Time Spent in Various Temperature Bands and the Growing Season in January in San RafaelJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFeb100%Jan 16100%Jan 16comfortablewarmhotsweltering
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 Rafael are very rapidly increasing during January, increasing by 914°F, from 5,630°F to 6,545°F, over the course of the month.

Growing Degree Days in January in San Rafael

Growing Degree Days in January in San RafaelJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031315,400°F5,400°F5,600°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°FDecFebJan 15,630°FJan 15,630°FJan 316,545°FJan 316,545°FJan 115,936°FJan 115,936°FJan 216,242°FJan 216,242°F
The average growing degree days accumulated over the course of January, 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 Rafael is essentially constant during January, remaining within 0.1 kWh of 5.6 kWh throughout.

Average Daily Incident Shortwave Solar Energy in January in San Rafael

Average Daily Incident Shortwave Solar Energy in January in San RafaelJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhDecFebJan 15.7 kWhJan 15.7 kWhJan 315.5 kWhJan 315.5 kWhJan 115.7 kWhJan 115.7 kWhJan 215.6 kWhJan 215.6 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 Rafael are -7.030 deg latitude, -76.475 deg longitude, and 771 ft elevation.

The topography within 2 miles of San Rafael is essentially flat, with a maximum elevation change of 52 feet and an average elevation above sea level of 775 feet. Within 10 miles is essentially flat (1,424 feet). Within 50 miles contains very significant variations in elevation (6,785 feet).

The area within 2 miles of San Rafael is covered by trees (38%), cropland (34%), and shrubs (12%), within 10 miles by trees (54%) and cropland (29%), and within 50 miles by trees (81%) and cropland (12%).

This report illustrates the typical weather in San Rafael, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

San Rafael is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of San Rafael, according to the International Standard Atmosphere .

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.

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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