If you found it hard to sleep last night in Auckland it’s not surprising.  From late Wednesday evening humidity levels hit 100% in Auckland city, coupled with warm air, it made surfaces damp, sticky and unpleasant for many.

Head weather analyst Philip Duncan says the humidex, which is a more accurate gauge of how the air feels on the human body, was around 26 degrees at 11pm.

“At 100% humidity the air is saturated, it can no longer absorb any moisture.  You’ll find outside the cloud is almost at sea level with light drizzle.  Sweat on your skin can’t be absorbed into the air so it stays on your skin, and cool beverages instantly form big drops of condensation”.

Mr Duncan says the warmth and high humidity can also cause problems for motorists without air conditioning.  “It can fog up the windows very quickly and this with air conditioning might find condensations forms on the outside of the window”.

The humid weather coupled with afternoon heat during Thursday may trigger isolated heavy downpours and possible the odd isolated thunderstorm.