General January Weather

[JP.]

Another month with Christchurch on top of the sunshine hours.

[spwill]

Another month with Christchurch on top of the sunshine hours.

An aspect of sunshine hrs is the affect of latitude on day length. There are more day light hrs in the south of the country in Summer, it is the reverse in Winter with longer day light hrs in the north.
Edit ,Sunrise and sunset times for Kaitaia and Invercargill mid month
Kaitaia 6.27am - 8.43pm, Invercargill 6.13am - 9.37pm

[Nev]

Are there any websites that have stats on windrun? I used to love Jeffs station here in Christchurch, I'm interested because I feel Dec and Jan have been quite a bit windier than past few summers. Especially the Nor easterly

NIWA's Cliflo data-base has a few windrun stats for some sites. Below is Chch Aero's mean monthly wind speeds in terms of metres per second for the last few years, along with its 1991-2020 normals for comparison. Note that Chch Aero's windiest months are usually Dec and Jan and its least windiest Jun and Jul, although its all-time windiest month was Nov 1982 with a mean speed of 6.3 m/s from records since 1942.

Code: Select all

Christchurch Aero monthly mean wind speed (m/s) 

Date     Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec    Annual

2020     4.7   4.8   4.9   3.8   3.0   3.3   3.1   3.3   3.9   4.3   4.6   4.6     4.0
2021     4.9   4.4   3.6   3.3   3.6   3.0   3.4   3.7   3.8   4.5   4.5   4.6     3.9
2022     4.6   4.3   3.9   3.2   2.6   3.4   3.4   3.2   3.7   4.2   4.5   4.5     3.8
2023     4.9   4.5   4.4   3.9   3.2   3.5   3.0   3.4   4.4   4.7   4.2   4.9     4.1
2024     5.0

Norm     4.8   4.6   4.3   3.6   3.3   3.0   3.0   3.5   3.9   4.4   4.6   4.8     4.0

Re sunshine hours, Chch Aero normally averages slightly more than Akld (Mangere) from Aug to Dec, but slightly less from Jan to Jul.

[spwill]

Another month with Christchurch on top of the sunshine hours.

Yes, a record January there.

Whangaporaoa with a mean temperature of 22C, a record there.

[Nev]

Whangaporaoa with a mean temperature of 22C, a record there.

Note that that MS site on Whangaporaoa's cape only has records from 2000, not 1982 as stated by NIWA. It looks like they've included Tiritiri Matangi Island's temp data from 1982, which is nearly 6 km further east and always records lower Jan mean temps than Whangaporaoa.

[NZ Thunderstorm Soc]

Sorry, a little late.
Stats from Geraldine for January.

Min - 5.5C (Wed 24th)
Max - 33.3C (Thurs 11h)
L Max - 19.4C (Thurs 18th)
H Min - 17.6C (Sat 27th)
PPT - 54.9mm over 10 days
3 days over 30C.