Climate and Average Weather Year Round in Santa Ana PeruThe climate in Santa Ana is cold and overcast. Over the course of the year, the temperature typically varies from 21°F to 47°F and is rarely below 15°F or above 52°F. Based on the tourism score, the best times of year to visit Santa Ana for warm-weather activities are from mid January to early February and from mid to late December. Average Temperature in Santa AnaThe temperature in Santa Ana varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. Nanortalik, Greenland (5,327 miles away) is the far-away foreign place with temperatures most similar to Santa Ana (view comparison). CloudsIn Santa Ana, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year. The clearer part of the year in Santa Ana begins around April 26 and lasts for 4.8 months, ending around September 20. The clearest month of the year in Santa Ana is July, during which on average the sky is clear, mostly clear, or partly cloudy 62% of the time. The cloudier part of the year begins around September 20 and lasts for 7.2 months, ending around April 26. The cloudiest month of the year in Santa Ana is February, during which on average the sky is overcast or mostly cloudy 90% of the time.
PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Santa Ana varies throughout the year. The wetter season lasts 4.1 months, from November 24 to March 28, with a greater than 12% chance of a given day being a wet day. The month with the most wet days in Santa Ana is February, with an average of 6.6 days with at least 0.04 inches of precipitation. The drier season lasts 7.9 months, from March 28 to November 24. The month with the fewest wet days in Santa Ana is July, with an average of 0.4 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. Based on this categorization, the most common form of precipitation in Santa Ana changes throughout the year. Rain alone is the most common for 9.7 months, from August 24 to June 15. The month with the most days of rain alone in Santa Ana is February, with an average of 4.3 days. Mixed snow and rain is the most common for 2.3 months, from June 15 to August 24. The month with the most days of mixed snow and rain in Santa Ana is February, with an average of 1.8 days.
RainfallTo 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. Santa Ana experiences some seasonal variation in monthly rainfall. The rainy period of the year lasts for 4.2 months, from November 26 to April 1, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Santa Ana is February, with an average rainfall of 1.1 inches. The rainless period of the year lasts for 7.8 months, from April 1 to November 26. The month with the least rain in Santa Ana is July, with an average rainfall of 0.0 inches.
SnowfallAs with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Santa Ana experiences some seasonal variation in monthly snowfall. The snowy period of the year lasts for 6.6 months, from September 15 to April 2, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Santa Ana is February, with an average snowfall of 2.2 inches. The snowless period of the year lasts for 5.4 months, from April 2 to September 15. The least snow falls around May 31, with an average total accumulation of 0.1 inches.
SunThe length of the day in Santa Ana does not vary substantially over the course of the year, staying within 53 minutes of 12 hours throughout. In 2024, the shortest day is June 20, with 11 hours, 21 minutes of daylight; the longest day is December 21, with 12 hours, 54 minutes of daylight.
The earliest sunrise is at 5:23 AM on November 20, and the latest sunrise is 1 hour, 1 minute later at 6:23 AM on July 10. The earliest sunset is at 5:40 PM on May 31, and the latest sunset is 54 minutes later at 6:34 PM on January 23. Daylight saving time (DST) is not observed in Santa Ana during 2024. 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. MoonThe 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. HumidityWe 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 perceived humidity level in Santa Ana, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
WindThis 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 Santa Ana experiences mild seasonal variation over the course of the year. The windier part of the year lasts for 2.8 months, from July 4 to September 28, with average wind speeds of more than 5.9 miles per hour. The windiest month of the year in Santa Ana is August, with an average hourly wind speed of 6.6 miles per hour. The calmer time of year lasts for 9.2 months, from September 28 to July 4. The calmest month of the year in Santa Ana is May, with an average hourly wind speed of 5.2 miles per hour.
The predominant average hourly wind direction in Santa Ana is from the east throughout the year. Water TemperatureSanta Ana 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 2.9 months, from January 7 to April 4, with an average temperature above 69°F. The month of the year in Santa Ana with the warmest water is February, with an average temperature of 71°F. The time of year with cooler water lasts for 4.1 months, from July 5 to November 9, with an average temperature below 64°F. The month of the year in Santa Ana with the coolest water is September, with an average temperature of 62°F.
Best Time of Year to VisitTo characterize how pleasant the weather is in Santa Ana 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 Santa Ana for general outdoor tourist activities are from mid January to early February and from mid to late December, with a peak score in the second week of December. Tourism Score in Santa AnaThe beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Beach/Pool Score in Santa AnaMethodologyFor 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. Growing SeasonDefinitions 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 Santa Ana are sufficiently cold 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. 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. Solar EnergyThis 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 per square meter does not vary significantly over the course of the year, remaining within 0.5 kilowatt-hours of 6.0 kilowatt-hours throughout.
TopographyFor the purposes of this report, the geographical coordinates of Santa Ana are -13.050 deg latitude, -75.133 deg longitude, and 14,665 ft elevation. The topography within 2 miles of Santa Ana contains very significant variations in elevation, with a maximum elevation change of 1,834 feet and an average elevation above sea level of 15,165 feet. Within 10 miles contains very significant variations in elevation (4,003 feet). Within 50 miles also contains extreme variations in elevation (14,777 feet). The area within 2 miles of Santa Ana is covered by cropland (36%), shrubs (18%), sparse vegetation (16%), and grassland (15%), within 10 miles by shrubs (26%) and cropland (18%), and within 50 miles by shrubs (35%) and cropland (18%). Data SourcesThis report illustrates the typical weather in Santa Ana, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere is only a single weather station, Capitán FAP Renán Elías Olivera Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Santa Ana. At a distance of 141 kilometers from Santa Ana, 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 Santa Ana 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 DataAll 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. DisclaimerThe 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. Please review our full terms contained on our Terms of Service page. |