Average Weather at Christchurch International Airport New Zealand
At Christchurch International Airport, the summers are comfortable, the winters are very cold, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 35°F to 73°F and is rarely below 27°F or above 84°F.
Based on the tourism score, the best time of year to visit Christchurch International Airport for warm-weather activities is from early January to late February.
The warm season lasts for 3.4 months, from December 4 to March 16, with an average daily high temperature above 68°F. The hottest day of the year is January 17, with an average high of 73°F and low of 54°F.
The cool season lasts for 3.0 months, from May 28 to August 28, with an average daily high temperature below 55°F. The coldest day of the year is June 30, with an average low of 35°F and high of 51°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
At Christchurch International Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year at Christchurch International Airport begins around January 12 and lasts for 3.0 months, ending around April 13. On March 5, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 60% of the time, and overcast or mostly cloudy 40% of the time.
The cloudier part of the year begins around April 13 and lasts for 9.0 months, ending around January 12. On June 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 50% of the time, and clear, mostly clear, or partly cloudy 50% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Christchurch International Airport varies throughout the year.
The wetter season lasts 7.5 months, from May 31 to January 13, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 34% on December 20.
The drier season lasts 4.5 months, from January 13 to May 31. The smallest chance of a wet day is 23% on February 11.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 34% on December 20.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Christchurch International Airport experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year at Christchurch International Airport. The most rain falls during the 31 days centered around June 15, with an average total accumulation of 2.4 inches.
The least rain falls around April 1, with an average total accumulation of 1.9 inches.
Average Monthly Rainfall
The length of the day at Christchurch International Airport varies significantly over the course of the year. In 2018, the shortest day is June 21, with 8 hours, 57 minutes of daylight; the longest day is December 22, with 15 hours, 26 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:42 AM on December 10, and the latest sunrise is 2 hours, 21 minutes later at 8:03 AM on June 28. The earliest sunset is at 4:59 PM on June 15, and the latest sunset is 4 hours, 15 minutes later at 9:13 PM on January 2.
Daylight saving time (DST) is observed at Christchurch International Airport during 2018, starting in the spring on September 30 and ending in the fall on April 1.
Sunrise & Sunset with Twilight and Daylight Saving Time
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The perceived humidity level at Christchurch International Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed at Christchurch International Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.0 months, from September 16 to March 16, with average wind speeds of more than 9.6 miles per hour. The windiest day of the year is January 3, with an average hourly wind speed of 10.6 miles per hour.
The calmer time of year lasts for 6.0 months, from March 16 to September 16. The calmest day of the year is April 25, with an average hourly wind speed of 8.6 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Christchurch International Airport varies throughout the year.
The wind is most often from the north for 1.4 weeks, from January 21 to January 31; for 2.0 months, from February 12 to April 13; for 1.3 weeks, from October 29 to November 7; and for 3.3 weeks, from December 6 to December 29, with a peak percentage of 31% on April 11. The wind is most often from the east for 1.7 weeks, from January 31 to February 12, with a peak percentage of 27% on February 7. The wind is most often from the west for 6.5 months, from April 13 to October 29; for 4.1 weeks, from November 7 to December 6; and for 3.3 weeks, from December 29 to January 21, with a peak percentage of 43% on June 12.
Christchurch International Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.3 months, from December 21 to March 31, with an average temperature above 59°F. The day of the year with the warmest water is February 12, with an average temperature of 62°F.
The time of year with cooler water lasts for 3.3 months, from June 17 to September 28, with an average temperature below 51°F. The day of the year with the coolest water is August 6, with an average temperature of 48°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is at Christchurch International Airport throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Christchurch International Airport for general outdoor tourist activities is from early January to late February, with a peak score in the last week of January.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Christchurch International Airport for hot-weather activities is from late December to late January, with a peak score in the second week of January.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
The growing season at Christchurch International Airport typically lasts for 7.1 months (215 days), from around October 1 to around May 4, rarely starting before September 5 or after November 2, and rarely ending before April 10 or after May 30.
Time Spent in Various Temperature Bands and the Growing Season
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
Based on growing degree days alone, the first spring blooms at Christchurch International Airport should appear around September 19, only rarely appearing before September 6 or after October 2.
Growing Degree Days
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.6 months, from October 29 to February 15, with an average daily incident shortwave energy per square meter above 6.2 kWh. The brightest day of the year is January 4, with an average of 7.4 kWh.
The darker period of the year lasts for 3.7 months, from April 28 to August 19, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest day of the year is June 21, with an average of 1.4 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Christchurch International Airport are -43.489 deg latitude, 172.532 deg longitude, and 108 ft elevation.
The topography within 2 miles of Christchurch International Airport contains only modest variations in elevation, with a maximum elevation change of 105 feet and an average elevation above sea level of 112 feet. Within 10 miles contains only modest variations in elevation (1,657 feet). Within 50 miles contains very significant variations in elevation (7,178 feet).
The area within 2 miles of Christchurch International Airport is covered by grassland (59%), trees (22%), and shrubs (11%), within 10 miles by grassland (40%) and trees (27%), and within 50 miles by water (53%) and grassland (20%).
This report illustrates the typical weather at Christchurch International Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
Christchurch International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.