He said the Fire Service had attended 40 fireworks related incidents since they went on sale on Sunday.
"We will see an increase tonight and over the weekend of incidents associated with fireworks."
He said he had no knowledge of serious injuries or serious structural fires from fireworks.
The public had made many inquiries about the sale of fireworks from street-side vendors, Mr McEnaney said.
"They're definitely getting hard to monitor. We want to make sure that if they're going to sell them that they have the right information."
He said vendors often move locations before Fire Service has a chance to catch up with them.
One report was of people selling fireworks out of a container and letting them off nearby to attract customers.
The fire risk was huge, Mr McEnaney said, given the container was full of fireworks.
He said the Fire Service hoped next year fireworks would be restricted to only public displays.
"They're safe, well-organised and controlled. We generally don't have too many problems with them."
MetService meteorologist Erick Brenstrum said most of the country would find showers became heavier in the afternoon but less frequent later in the evening.
"Quite a lot of places will have a bit of rain during the day to dampen down the ground and keep the firemen happy."
Northland would have isolated showers at their worst in the afternoon but some places wouldn't see any rain.
Showers in Auckland would become frequent in the afternoon, he said, but there may be a clear patch later on.
"There's a trend to get better during the evening and into the night. There looks to be a bit of a gap between 8 and 9 o'clock," Mr Brenstrum said.
"The wettest will be the afternoon and then just scattered, light showers or perhaps cloudy during the night."
The centre of the North Island would be wet, but there would be long gaps between showers late in the evening and into the night when people would have the opportunity to head outside and let some fireworks off.
Gisborne, New Plymouth and Taranaki would have showers that were heavier in the afternoon and early evening.
"Wanganui and Manawatu looks to have a dry evening. Wellington has a southerly and cloudy with showers becoming less frequent in the evening. It looks like it will just be cloudy with that southerly, you'll want to be wrapped up warm," Mr Brenstrum said.
"For Nelson and Marlborough, whatever showers are around in the afternoon will probably be cleared by the time they're wanting to get out a packet of matches."
The showers around Canterbury and Christchurch would have retreated back out of the main centres by around 8pm when cloud and maybe a chance of drizzle would stick around.
Dunedin would also have light rain in to the evening and night. Invercargill would have scattered light rain that could clear by the evening.
"It's often really changeable around this time of year," Mr Brenstrum said.
Fireworks fans postponing their pyrotechnics until weekend may have better luck when the forecast was for fine weather right around the country.
Bang bang: Firework shows
• Fireworks
Anzac Park, Palmerston North
Today 9.00pm
• Treetech Guy Fawkes Fireworks Spectacular
New Brighton Beach, Christchurch City
Today 9.00pm
• Fireworks Display
Te Kawau Rugby Grounds, Rongotea
Nov 7, 7.30pm
• Starlight Cinema Fireworks Extravaganza
Owen Delany Park, Taupo
Nov 7, 5.30pm
• Lions Community Fireworks Display
Solway Showgrounds, Masterton
Nov 7, 6.30pm
• Motukarara Fireworks Display
Motukarara Domain, Banks Peninsula
Nov 8, 5.30pm
• Whangarei Lions Clubs Fireworks Spectacular
Northland Events Centre (Toll Stadium), Whangarei
Nov 8, 6.00pm
• Jukes Carriers Gisborne Guy Fawkes Fireworks Spectacular
Eastland Group Raceway, Gisborne
Nov 8, 7.00pm
• Fireworks Spectacular
Massey Park, Auckland
Nov 14, 6.30pm
Source: eventfinder.co.nz
