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Average Weather in Nairobi Kenya

The climate in Nairobi is warm, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 54°F to 81°F and is rarely below 50°F or above 84°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in NairobiJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcoolwarmcomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.


In Nairobi, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Nairobi begins around June 26 and lasts for 3.5 months, ending around October 11. On September 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 56% of the time, and overcast or mostly cloudy 44% of the time.

The cloudier part of the year begins around October 11 and lasts for 8.5 months, ending around June 26. On April 17, the cloudiest day of the year, the sky is overcast or mostly cloudy 74% of the time, and clear, mostly clear, or partly cloudy 26% of the time.

Cloud Cover Categories

Cloud Cover Categories in NairobiclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Sep 256%Sep 256%Apr 1726%Apr 1726%Jun 2641%Jun 2641%Oct 1141%Oct 1141%clearpartly cloudyovercastmostly clearmostly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.


A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Nairobi varies significantly throughout the year.

The wetter season lasts 6.9 months, from October 22 to May 18, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 48% on April 21.

The drier season lasts 5.1 months, from May 18 to October 22. The smallest chance of a wet day is 3% on July 20.

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 48% on April 21.

Daily Chance of Precipitation

Daily Chance of Precipitation in NairobiwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Apr 2148%Apr 2148%Jul 203%Jul 203%Jan 119%Jan 119%Oct 2226%Oct 2226%May 1826%May 1826%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).


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. Nairobi experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.2 months, from October 2 to June 8, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around April 22, with an average total accumulation of 3.4 inches.

The rainless period of the year lasts for 3.8 months, from June 8 to October 2. The least rain falls around July 11, with an average total accumulation of 0.1 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.


The length of the day in Nairobi does not vary substantially over the course of the year, staying within 11 minutes of 12 hours throughout. In 2017, the shortest day is June 21, with 12 hours, 3 minutes of daylight; the longest day is December 21, with 12 hours, 12 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 6:11 AM on November 5, and the latest sunrise is 31 minutes later at 6:42 AM on February 14. The earliest sunset is at 6:21 PM on October 31, and the latest sunset is 31 minutes later at 6:51 PM on February 8.

Daylight saving time (DST) is not observed in Nairobi during 2017.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in NairobiJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNov 56:11 AMNov 56:11 AM6:51 PMFeb 86:51 PMFeb 8Oct 316:21 PMOct 316:21 PM6:42 AMFeb 146:42 AMFeb 14daynightnight
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.


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.

The perceived humidity level in Nairobi, 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.

Humidity Comfort Levels

Humidity Comfort Levels in NairobiJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Aug 300%Aug 300%Apr 50%Apr 50%comfortablecomfortabledrydryhumidhumid
The percentage of time spent at various humidity comfort levels, categorized by dew point: 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 Nairobi experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.7 months, from September 7 to April 27, with average wind speeds of more than 4.8 miles per hour. The windiest day of the year is December 4, with an average hourly wind speed of 5.9 miles per hour.

The calmer time of year lasts for 4.3 months, from April 27 to September 7. The calmest day of the year is June 17, with an average hourly wind speed of 3.6 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Nairobi is from the east throughout the year.

Wind Direction

Wind Direction in NairobiJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%eastsouthnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Solar Energy

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 2.1 months, from January 23 to March 25, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is March 6, with an average of 7.5 kWh.

The darker period of the year lasts for 2.4 months, from May 31 to August 11, with an average daily incident shortwave energy per square meter below 6.1 kWh. The darkest day of the year is June 20, with an average of 5.8 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in NairobibrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhMar 67.5 kWhMar 67.5 kWhJun 205.8 kWhJun 205.8 kWhJan 237.2 kWhJan 237.2 kWhAug 116.1 kWhAug 116.1 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.


For the purposes of this report, the geographical coordinates of Nairobi are -1.283 deg latitude, 36.817 deg longitude, and 5,512 ft elevation.

The topography within 2 miles of Nairobi contains only modest variations in elevation, with a maximum elevation change of 404 feet and an average elevation above sea level of 5,541 feet. Within 10 miles contains only modest variations in elevation (1,608 feet). Within 50 miles contains very significant variations in elevation (10,722 feet).

The area within 2 miles of Nairobi is covered by artificial surfaces (66%) and trees (32%), within 10 miles by artificial surfaces (27%) and trees (26%), and within 50 miles by grassland (30%) and cropland (25%).

Data Sources

This report illustrates the typical weather in Nairobi, 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 are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Nairobi.

For each station, the records are corrected for the elevation difference between that station and Nairobi according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Nairobi is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Nairobi and a given station.

The stations contributing to this reconstruction are: Nairobi / Wilson (74%, 4.3 kilometers, south); Nairobi / Dagoretti (13%, 8 kilometers, west); Jomo Kenyatta International Airport (13%, 13 kilometers, east); and Nyeri Airport (0.8%, 89 kilometers, north).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports 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.