The earliest sunset is at 5:49 PM on May 30, and the latest sunset is 51 minutes later at 6:40 PM on January 25. 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. September to November for good rainforest trekking. The average hourly wind speed in Lima experiences mild seasonal variation over the course of the year. December Weather in Peru – December. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 73% of the time, and overcast or mostly cloudy 27% of the time. In Lima, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year. MERRA-2 Modern-Era Retrospective Analysis. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Lima area. Lima's climate is a mild desert climate with no extreme hot or cold weather. There is only a single weather station, Jorge Chávez International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Lima. The shaded overlays indicate night and civil twilight. 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. The coldest month (with the lowest average sea temperature) is September (15.8°C). The station records are corrected for the elevation difference between the station and Lima according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. The length of the day in Lima does not vary substantially over the course of the year, staying within 50 minutes of 12 hours throughout. Driest months (with the lowest rainfall) are April and November (0mm). The number of hours during which the Sun is visible (black line). During the winter (June to October), the city is often covered with adense fog [drizzle-like], which often lasts all day (locally known as' garúa) with temperatures between 12 and 15 … Ideal for less-crowded visits. Lima, Peru - December weather averages including high and low temperatures, humidity, rainfall, snowfall, daylight, sunshine, UV index, and sea temperature. Ribeira Brava, Portugal (5,019 miles away) and Ingenio, Spain (4,962 miles) are the far-away foreign places with temperatures most similar to Lima (view comparison). Based on this score, the best time of year to visit Lima for general outdoor tourist activities is from early April to mid October, with a peak score in the first week of May. In this report, we use a base of 50°F and a cap of 86°F. The warm season lasts for 3.0 months, from January 3 to April 4, with an average daily high temperature above 78°F. The cool season lasts for 4.2 months, from June 10 to October 16, with an average daily high temperature below 69°F. The muggier period of the year lasts for 3.7 months, from December 23 to April 15, during which time the comfort level is muggy, oppressive, or miserable at least 17% of the time. The calmest day of the year is February 29, with an average hourly wind speed of 7.3 miles per hour. The month with least sunshine is July (Average sunshine: 0.9h). 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. Internacional Jorgechavez, Peru). The black line is the percentage chance that a given day is within the growing season. Temperatures in Lima are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. The least muggy day of the year is September 25, when muggy conditions are essentially unheard of. The month with most sunshine is April (Average sunshine: 6.1h). The brightest day of the year is October 1, with an average of 7.3 kWh. The average water temperature experiences some seasonal variation over the course of the year. The month with the lowest average high temperature is August (18.4°C). View all Cosmos offers, Metric (°C / mm)  |  Imperial (°F / inches), Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers.