Climate and Average Weather Year Round in Nanyamba Tanzania
In Nanyamba, the wet season is oppressive and mostly cloudy, the dry season is humid and mostly clear, and it is hot year round. Over the course of the year, the temperature typically varies from 62°F to 92°F and is rarely below 59°F or above 95°F.
Based on the beach/pool score, the best times of year to visit Nanyamba for hot-weather activities are from late April to mid June and from late July to mid November.
Climate in Nanyamba
Average Temperature in Nanyamba
The hot season lasts for 2.0 months, from October 9 to December 8, with an average daily high temperature above 91°F. The hottest day of the year is November 11, with an average high of 92°F and low of 69°F.
The cool season lasts for 3.4 months, from April 22 to August 4, with an average daily high temperature below 86°F. The coldest day of the year is July 22, with an average low of 62°F and high of 85°F.
Average High and Low Temperature in Nanyamba
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.
Average Hourly Temperature in Nanyamba
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
In Nanyamba, 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 Nanyamba begins around April 11 and lasts for 7.5 months, ending around November 28. On August 19, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 86% of the time, and overcast or mostly cloudy 14% of the time.
The cloudier part of the year begins around November 28 and lasts for 4.5 months, ending around April 11. On February 8, the cloudiest day of the year, the sky is overcast or mostly cloudy 86% of the time, and clear, mostly clear, or partly cloudy 14% of the time.
Cloud Cover Categories in Nanyamba
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Nanyamba varies very significantly throughout the year.
The wetter season lasts 4.9 months, from November 28 to April 24, with a greater than 37% chance of a given day being a wet day. The chance of a wet day peaks at 69% on March 12.
The drier season lasts 7.1 months, from April 24 to November 28. The smallest chance of a wet day is 4% on August 27.
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 throughout the year is rain alone, with a peak probability of 69% on March 12.
Daily Chance of Precipitation in Nanyamba
To 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. Nanyamba experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 9.1 months, from September 25 to June 28, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around January 28, with an average total accumulation of 8.0 inches.
The rainless period of the year lasts for 2.9 months, from June 28 to September 25. The least rain falls around September 2, with an average total accumulation of 0.3 inches.
Average Monthly Rainfall in Nanyamba
The length of the day in Nanyamba does not vary substantially over the course of the year, staying within 45 minutes of 12 hours throughout. In 2021, the shortest day is June 21, with 11 hours, 30 minutes of daylight; the longest day is December 21, with 12 hours, 45 minutes of daylight.
Hours of Daylight and Twilight in Nanyamba
The earliest sunrise is at 5:47 AM on November 18, and the latest sunrise is 53 minutes later at 6:40 AM on July 12. The earliest sunset is at 6:04 PM on May 28, and the latest sunset is 47 minutes later at 6:51 PM on January 24.
Daylight saving time (DST) is not observed in Nanyamba during 2021.
Sunrise & Sunset with Twilight in Nanyamba
The figure below presents a compact representation of key lunar data for 2021. 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.
Moon Rise, Set & Phases in Nanyamba
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.
Nanyamba experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 9.0 months, from September 17 to June 16, during which time the comfort level is muggy, oppressive, or miserable at least 38% of the time. The muggiest day of the year is March 12, with muggy conditions 100% of the time.
The least muggy day of the year is July 23, with muggy conditions 18% of the time.
Humidity Comfort Levels in Nanyamba
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Nanyamba experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 5.7 months, from June 21 to December 12, with average wind speeds of more than 4.9 miles per hour. The windiest day of the year is October 12, with an average hourly wind speed of 6.5 miles per hour.
The calmer time of year lasts for 6.3 months, from December 12 to June 21. The calmest day of the year is March 16, with an average hourly wind speed of 3.3 miles per hour.
Average Wind Speed in Nanyamba
The predominant average hourly wind direction in Nanyamba varies throughout the year.
The wind is most often from the east for 1.2 months, from March 8 to April 14 and for 4.3 months, from August 6 to December 14, with a peak percentage of 94% on October 24. The wind is most often from the south for 3.7 months, from April 14 to August 6, with a peak percentage of 79% on June 16. The wind is most often from the north for 2.8 months, from December 14 to March 8, with a peak percentage of 76% on January 1.
Wind Direction in Nanyamba
Nanyamba 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 4.6 months, from December 12 to April 30, with an average temperature above 83°F. The day of the year with the warmest water is March 19, with an average temperature of 85°F.
The time of year with cooler water lasts for 3.1 months, from July 3 to October 7, with an average temperature below 79°F. The day of the year with the coolest water is August 12, with an average temperature of 78°F.
Average Water Temperature in Nanyamba
Best Time of Year to Visit
To characterize how pleasant the weather is in Nanyamba 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 time of year to visit Nanyamba for general outdoor tourist activities is from late May to early September, with a peak score in the second week of July.
Tourism Score in Nanyamba
The 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 Nanyamba for hot-weather activities are from late April to mid June and from late July to mid November, with a peak score in the last week of September.
Beach/Pool Score in Nanyamba
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. 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.
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 Nanyamba 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 Nanyamba
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
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.
Growing Degree Days in Nanyamba
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 experiences some seasonal variation over the course of the year.
The brighter period of the year lasts for 2.4 months, from September 17 to November 29, with an average daily incident shortwave energy per square meter above 7.0 kWh. The brightest day of the year is October 26, with an average of 7.5 kWh.
The darker period of the year lasts for 3.0 months, from January 1 to April 2, with an average daily incident shortwave energy per square meter below 5.4 kWh. The darkest day of the year is February 26, with an average of 4.9 kWh.
Average Daily Incident Shortwave Solar Energy in Nanyamba
For the purposes of this report, the geographical coordinates of Nanyamba are -10.683 deg latitude, 39.833 deg longitude, and 797 ft elevation.
The topography within 2 miles of Nanyamba contains only modest variations in elevation, with a maximum elevation change of 299 feet and an average elevation above sea level of 790 feet. Within 10 miles contains only modest variations in elevation (817 feet). Within 50 miles contains significant variations in elevation (2,949 feet).
The area within 2 miles of Nanyamba is covered by cropland (57%) and shrubs (37%), within 10 miles by cropland (47%) and shrubs (35%), and within 50 miles by cropland (30%) and shrubs (27%).
This report illustrates the typical weather in Nanyamba, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Mtwara Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Nanyamba.
At a distance of 54 kilometers from Nanyamba, 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 Nanyamba 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.
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.
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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
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.