Darwin is not known for its fogs, probably because it's the least prone of the Australia capitals. However, the last two mornings have been noticeably soupy.
This is not particularly unusual for this time of year. August is Darwin's foggiest month, with one foggy morning on average. Afternoon sea breezes develop at this time of year to increase humidity, and mornings are often chilly, a recipe for fog development.
In the last few days visibility at the airport got as low as 200 metres this morning and 100 metres yesterday morning.
The fog has become this thick with help from bushfire smoke, also a typical feature in the rural area during the dry season.
Any disruptions from the fog have been fairly short-lived, restricted to the early mornings, before the fog burns off.
Fog is a risk again tomorrow morning and each morning through to Sunday due to lingering moist, hazy air and chilly mornings.
Early next week winds should increase, reducing the chance of chilly mornings and fog.
Nights have been noticeably cold this month. Darwin is averaging an overnight minimum of just 16.7 degrees, four degrees below the long-term norm. This makes it the coldest start to August on record. The previous coldest August was in 2002 when the average minimum was 17.8 degrees.
© Weatherzone 2012
17:25 EST With lots of talk about the cracker start to the grain growing season, there are plenty of farmers who've missed out on that precious rain.