Climate and Average Weather Year Round in Bằng Lũng VietnamIn Bằng Lũng, the wet season is warm, oppressive, and overcast and the dry season is comfortable and mostly clear. Over the course of the year, the temperature typically varies from 51°F to 88°F and is rarely below 43°F or above 93°F. Based on the tourism score, the best times of year to visit Bằng Lũng for warm-weather activities are from mid March to late April and from early October to late November. Average Temperature in Bằng LũngThe hot season lasts for 5.0 months, from May 3 to October 2, with an average daily high temperature above 83°F. The hottest month of the year in Bằng Lũng is July, with an average high of 87°F and low of 74°F. The cool season lasts for 2.6 months, from December 12 to February 28, with an average daily high temperature below 67°F. The coldest month of the year in Bằng Lũng is January, with an average low of 51°F and high of 63°F.
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. Freeport, United States (8,649 miles away) and Palm Valley, United States (8,801 miles) are the far-away foreign places with temperatures most similar to Bằng Lũng (view comparison). CloudsIn Bằng Lũng, 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 Bằng Lũng begins around September 28 and lasts for 7.3 months, ending around May 6. The clearest month of the year in Bằng Lũng is December, during which on average the sky is clear, mostly clear, or partly cloudy 72% of the time. The cloudier part of the year begins around May 6 and lasts for 4.7 months, ending around September 28. The cloudiest month of the year in Bằng Lũng is June, during which on average the sky is overcast or mostly cloudy 88% 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 Bằng Lũng varies very significantly throughout the year. The wetter season lasts 4.7 months, from May 2 to September 24, with a greater than 34% chance of a given day being a wet day. The month with the most wet days in Bằng Lũng is July, with an average of 19.4 days with at least 0.04 inches of precipitation. The drier season lasts 7.3 months, from September 24 to May 2. The month with the fewest wet days in Bằng Lũng is December, with an average of 1.8 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. The month with the most days of rain alone in Bằng Lũng is July, with an average of 19.4 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 64% on July 9.
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. Bằng Lũng experiences extreme seasonal variation in monthly rainfall. Rain falls throughout the year in Bằng Lũng. The month with the most rain in Bằng Lũng is July, with an average rainfall of 8.3 inches. The month with the least rain in Bằng Lũng is February, with an average rainfall of 0.5 inches.
SunThe length of the day in Bằng Lũng varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 47 minutes of daylight; the longest day is June 21, with 13 hours, 29 minutes of daylight.
The earliest sunrise is at 5:13 AM on June 8, and the latest sunrise is 1 hour, 26 minutes later at 6:39 AM on January 16. The earliest sunset is at 5:12 PM on November 26, and the latest sunset is 1 hour, 33 minutes later at 6:45 PM on July 4. Daylight saving time (DST) is not observed in Bằng Lũng 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. Bằng Lũng experiences extreme seasonal variation in the perceived humidity. The muggier period of the year lasts for 8.2 months, from March 7 to November 15, during which time the comfort level is muggy, oppressive, or miserable at least 27% of the time. The month with the most muggy days in Bằng Lũng is July, with 30.9 days that are muggy or worse. The month with the fewest muggy days in Bằng Lũng is January, with 1.2 days that are muggy or worse.
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 Bằng Lũng experiences mild seasonal variation over the course of the year. The windier part of the year lasts for 6.0 months, from November 19 to May 19, with average wind speeds of more than 5.0 miles per hour. The windiest month of the year in Bằng Lũng is March, with an average hourly wind speed of 5.9 miles per hour. The calmer time of year lasts for 6.0 months, from May 19 to November 19. The calmest month of the year in Bằng Lũng is August, with an average hourly wind speed of 4.1 miles per hour.
The predominant average hourly wind direction in Bằng Lũng varies throughout the year. The wind is most often from the south for 5.5 months, from March 5 to August 22, with a peak percentage of 64% on July 2. The wind is most often from the east for 6.5 months, from August 22 to March 5, with a peak percentage of 53% on January 1. Best Time of Year to VisitTo characterize how pleasant the weather is in Bằng Lũng 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 Bằng Lũng for general outdoor tourist activities are from mid March to late April and from early October to late November, with a peak score in the first week of November. Tourism Score in Bằng LũngThe beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Bằng Lũng for hot-weather activities are from late April to mid May and from early September to mid October, with a peak score in the last week of September. Beach/Pool Score in Bằng LũngMethodologyFor 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 Bằng Lũng 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. 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 experiences some seasonal variation over the course of the year. The brighter period of the year lasts for 1.8 months, from March 25 to May 20, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest month of the year in Bằng Lũng is April, with an average of 5.6 kWh. The darker period of the year lasts for 2.2 months, from November 25 to February 2, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest month of the year in Bằng Lũng is January, with an average of 3.9 kWh.
TopographyFor the purposes of this report, the geographical coordinates of Bằng Lũng are 22.158 deg latitude, 105.596 deg longitude, and 1,152 ft elevation. The topography within 2 miles of Bằng Lũng contains very significant variations in elevation, with a maximum elevation change of 1,526 feet and an average elevation above sea level of 1,454 feet. Within 10 miles contains very significant variations in elevation (4,180 feet). Within 50 miles also contains extreme variations in elevation (6,499 feet). The area within 2 miles of Bằng Lũng is covered by trees (51%), shrubs (27%), and cropland (20%), within 10 miles by trees (62%) and shrubs (22%), and within 50 miles by trees (52%) and cropland (22%). Data SourcesThis report illustrates the typical weather in Bằng Lũng, 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, Noi Bai International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Bằng Lũng. At a distance of 107 kilometers from Bằng Lũng, 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 Bằng Lũng 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. |