CliFlo will be unavailable between 5pm and 8pm Wed 12 Dec 2018 for system maintenance. We apologise for any inconvenience.
is the web system that provides access to New Zealand's National Climate Database
The climate database holds data from about 6500 climate stations which have been operating for various periods since the earliest observations were made in the year 1850. The database continues to receive data from over 600 stations that are currently operating.
CliFlo returns raw data and statistical summaries. Raw data include ten minute, hourly and daily frequencies. Statistical data include about eighty different types of monthly and annual statistics and six types of thirty−year normals. See an example of daily output
and an example of statistical output
Change to VCSN Data Access:
06-Aug-2015 VCSN (Virtual Climate Station Network) data is now available through the NIWA data service at data.niwa.co.nz
Changes in Serving Hourly Data Sourced from MetService
From 01-Jan-2013, the availability of data from the National Climate Database through CliFlo will change due to changes in the way MetService and NIWA exchange data. After this date, hourly data from MetService sites (name generally includes "AWS" or "Aero") will no longer be available through CliFlo.
These changes do not affect the access to data from NIWA operated sites, or historical hourly data collected prior to 01-Jan-2013, or daily climate summaries from all sites - these data are available as usual through CliFlo.
CliFlo Data are Free
Climate data accessed through CliFlo are free (see the announcement
- Access to this data is through the "Subscribe On-line" link to the left.
- The subscription is subject to the user agreeing to NIWA's Terms and Conditions.
- Some restrictions to climate data apply, such as Pacific Island sites.
This policy is designed to promote the widespread use of NIWA's Nationally Significant Climate Database by users of climate data.
To access more than the demo, you must have a subscription to CliFlo. This can be done on-line using the link on the left.
Note that this site uses popup windows for the login, help, station search and datatype windows. To work correctly, disable any popup window blocking software and enable cookies for this site (see also Problems
If you are still having login problems, close all browser windows and quit completely from your browser (including all instances of Excel triggered by the "database query form" file download option) and then try again.
is available on many topics by clicking on a help link or a help icon