Monday's national forecast


A humid northeasterly airflow lies over New Zealand today, this will result in more showers and potential thunderstorms in the afternoon for certain regions.

Upper North Island
Expect a period of morning rain then easing to showers, northeasterly winds gradually tend to the northwest. Could be an isolated downpour or two from afternoon, perhaps even some thunder especially about the Waikato and Bay Of Plenty.
High's: 18-23

Lower North Island
Mainly dry this morning with some sun, a few showers start to move in during the afternoon but still expect dry areas to remain also. Showers could be heavy with thunderstorms especially about the Manawatu and Wairarapa in the afternoon then easing in the evening. Winds from the northeast then tending north to northwest later in the evening.
High's: 18-24

Upper South Island
Any early showers about the Nelson / Marlborough region clear then some sun breaks through, fairly dry otherwise. Some low cloud about the Canterbury Plains may break to areas of sun this afternoon. Showers develop this afternoon about inland areas east of the Main Divide, these showers may become heavy with thunderstorms then easing and clearing in the evening.
High's: 18-23

Lower South Island
Any morning showers clear then some sun breaks through, showers start moving in to South Westland from afternoon and showers develop about inland areas east of the Main Divide north of about Otago Peninsula. These afternoon showers in the east may become heavy with thunderstorms then easing and clearing in the evening.
High's: 19-27

Temperatures are nice and warm for most today, the warmest spot will be about Central Otago and Southland with high's getting into the mid to late twenties. Keep an eye out for any thunderstorms that develop today, with the humid air mass we have at the moment any storm that does develop could produce very heavy downpours and bring a chance of flash flooding.

By Weather Analyst Aaron Wilkinson - WeatherWatch.co.nz