This report describes the typical weather at the Sir Seretse Khama International Airport (Gaborone, Botswana) weather station over the course of an average October 1. It is based on the historical records from 2006 to 2012. Earlier records are either unavailable or unreliable.
Gaborone has a hot semi-arid steppe climate. The area within 25 mi of this station is covered by grasslands (99%).
The temperature typically varies from 59°F to 85°F and is rarely below 53°F or above 92°F.
The coolest hours of the day are from 2am to 8am with the coldest at 6am, at which time the temperature is below 62°F three days out of four.
The warmest hours of the day are from noon to 7pm with the hottest at 4pm, at which time the temperature is above 81°F three days out of four.
The day has gained half its heat by 10am and lost it again by 10pm.
On October 1 the Sun rises at 5:56am and sets at 6:15pm.
Solar noon is at 12:05pm.
For reference, on the longest day of the year the Sun rises at 5:25am and sets at 7:03pm, while on the shortest day of the year it rises at 6:58am and sets at 5:37pm.
Astronomical twilight begins and ends 76 minutes before sunrise and after sunset at 4:40am and 7:32pm, respectively.
Nautical twilight begins and ends 49 minutes before sunrise and after sunset at 5:06am and 7:04pm, respectively.
Civil twilight begins and ends 23 minutes before sunrise and after sunset at 5:33am and 6:38pm, respectively.
Solar twilight begins and ends 30 minutes after sunrise and before sunset at 6:26am and 5:46pm, respectively.
The median cloud cover ranges from 46% (partly cloudy) to 70% (partly cloudy).
At 4pm, the clearest time of the day, the sky is clear, mostly clear, or partly cloudy 30% of the time, and overcast or mostly cloudy 9% of the time.
At 7am, the cloudiest time of the day, the sky is overcast, mostly cloudy, or partly cloudy 14% of the time, and clear or mostly clear 4% of the time.
The sky is typically clearing in earnest by noon.
The clouds have typically started forming in earnest by 1am.
There is a 15% chance that precipitation will be observed at some point during the day.
When precipitation does occur it is most often in the form of thunderstorms (89% of days with precipitation have at worst thunderstorms) and slight rain (7%).
Precipitation is most likely around 8pm and least likely around 11am.
Either snow is exceptionally unlikely to fall at this location on October 1 or this station does not reliably report precipitation types.
The relative humidity typically ranges from 27% (dry) to 59% (mildly humid), rarely dropping below 14% (very dry), or exceeding 77% (humid).
The air is driest at 4pm, at which time the relative humidity is less than 33% (comfortable) three days out of four; it is most humid at 5am, exceeding 48% (comfortable) three days out of four.
The dew point ranges from 43°F to 48°F with an average of 45°F.
For reference, comfortable indoor conditions should have a relative humidity between 30% and 50% with a dew point of less than 65°F.
Sustained wind speeds typically vary from 7 mph to 11 mph (light breeze to gentle breeze) over the course of the day.
The peak sustained wind speed typically occurs around 10am and is rarely outside the range 6 mph to 17 mph (light breeze to moderate breeze).
The wind is most calm around 5am, rarely exceeding 11 mph (gentle breeze).
The wind is most often out of the east (26% of the time) and north east (21% of the time). The wind is least often out of the north west (3% of the time).