The most rain falls during the 31 days centered around February 16, with an average total accumulation of 5.3 inches. Within 50 miles contains large variations in elevation (4,764 feet). In Saint Helena, the summers are long, hot, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy. USA, CA #9. September is a dry month with an average of 7mm (0.3in) rain. The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands. See the current St. Helena, CA weather and a 5 day forecast. The amount of rain in December is high with an average of 82mm (3.2in). January is the most wet month. Jamestown Weather February Averages, Saint Helena. Winds W at 5 to 10 mph. The average minimum temperature (usually the minimum temperature is noted during the night) in St. Helena in August is 14.4°C (57.92°F). precip.
Costa Almeria

Mauritius St. Helena gets some kind of precipitation, on average, 71 days per year. The average water temperature experiences some seasonal variation over the course of the year. Outlook. Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. On average, there are 263 sunny days per year in St. Helena. At 7.8 °C | 46.0 °F on average, January is the coldest month of the year. Find Out More. Get the monthly weather forecast for St. Helena, CA, including daily high/low, historical averages, to help you plan ahead. The perceived humidity level in Saint Helena, 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. Based on weather reports collected during 1985–2015. July is the hottest month for St. Helena with an average high temperature of 88.8°, which ranks it as about average compared to other places in California. × The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Change Location . This section reports on the wide-area average surface temperature of that water. 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 earliest sunset is at 4:48 PM on December 7, and the latest sunset is 3 hours, 49 minutes later at 8:38 PM on June 27. The thin dotted lines are the corresponding average perceived temperatures. La Gomera

Southern Asia (Any), 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. In Saint Helena, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year. 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 . For 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. The average high during this season is between 64.3°F (17.9°C) and 57.1°F (13.9°C). Saint Helena, CA Daily Charts. 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. High 93F. The black line is the percentage chance that a given day is within the growing season. Showing: All Year Climate & Weather Averages in Jamestown. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Figures, provided by the St Helena Meteorological Station, are monthly averages taken at the station over the years 2001-2018 (North-west island temperatures - e.g. 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). The wind is most often from the north for 4.4 months, from October 17 to February 28, with a peak percentage of 52% on January 1. The amount of rain in August … The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. Average Weather at Gough Island St. Helena. The shaded overlays indicate night and civil twilight. The average minimum temperature (usually the minimum temperature is noted during the night) in St. Helena in September is 13.0°C (55.4°F). Saint Helena average temperature. Average Weather during August in St. Helena (California), United States of America. The estimated value at Saint Helena is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Saint Helena and a given station. Average Weather during December in St. Helena (California), United States of America. : Hours of sunshine, Hi : Average high in ºF - Lo : Average low in ºF - Pre. The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year. Bookmark and Share. Based on weather reports collected during 2005–2015. 0.00 inch: 0.28 inch: Total snowfall Total snowfall - inch: 0 inch: Highest max temperature Highest max temp. Based on the tourism score, the best time of year to visit Saint Helena for warm-weather activities is from late June to mid September. The summers in San Rafael are long and comfortable with an average high temperature of 76°F and a low temperature of 54°F. In this report, we use a base of 50°F and a cap of 86°F. St Helena rain forecast information. Average High Average Low Record High Record Low Average Precipitation. The hot season lasts for 4.0 months, from June 5 to October 5, with an average daily high temperature above 83°F. Monthly average temperatures, rainfall, snow days & record high and low temperatures msn back to msn home weather records and averages powered by Microsoft News The average minimum temperature (usually the minimum temperature is noted during the night) in St. Helena in July is 15.0°C (59°F). Weather is too cold this time of year in St Helena to be enjoyable for warm weather travelers. 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. The brightest day of the year is June 27, with an average of 8.5 kWh. July is the driest month. 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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