New Caledonia Climate – July 2026 Update
Top 5 Cities: Nouméa, Mont-Dore, Dumbéa, Paita, and Lifou
Summary
While much of the globe experienced extraordinary mid-year heat, New Caledonia saw a near-typical southern winter month, with July averaging 19.17°C, just 0.2°C above the long-term baseline. Standing out as one of the coolest places on Earth relative to its historic averages, the territory escaped the record warmth seen elsewhere. Conditions are expected to remain near or slightly warmer than average as El Niño develops.
This month in numbers
July 2026 brought a mean temperature of 19.17°C to New Caledonia, representing a minor anomaly of +0.2°C above the 1961-1990 baseline. This ranked as the 41st warmest occurrence of the month in 87 years of records, far below the all-time high of 21.72°C set in 2022. Across 232 tracked global regions, the archipelago ranked as the 4th coolest relative to its normal baseline, sitting 229th overall. In stark contrast, global land temperatures reached 15.8°C with a +1.6°C anomaly, marking the 3rd warmest July in human history.
What changed
The broader May to July period delivered an average temperature of 20.56°C for New Caledonia, a +0.4°C anomaly that ranked as the 26th warmest May-July period on record. Globally, the same three months recorded an average land temperature of 14.34°C, making it the 2nd warmest May-July period ever recorded. On a global comparison, New Caledonia sat at 223rd out of 232 territories for three-month temperature departure. Despite this temperate winter stretch, the territory's overall trajectory remains upwards, with a long-term warming trend of +0.87°C and 2025 standing as its 3rd warmest year on record at 23.28°C.
What’s driving change?
The primary atmospheric mechanism keeping winter temperatures subdued across the South Pacific archipelago is the active ENSO cycle, as a developing El Niño phase alters regional sea surface temperature patterns and wind flows. While across global landmasses, surrounding marine waters and shifting equatorial air currents help buffer the island territory from the extreme heatwaves observed in continental regions.
Looking ahead
Seasonal forecasts indicate that as El Niño continues to establish itself, temperatures are expected to remain near or slightly above average over the coming months alongside an elevated risk of drier conditions.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Climate Map – Global
Source: NOAA Climate at a Glance (countries & continents) · Met Office (UK) · US states & climate regions. Anomalies are vs the 1961–1990 baseline. See methodology.
Typical Climate – New Caledonia
Köppen Aw · TropicalNew Caledonia has a tropical climate (Köppen Aw: Tropical savanna (dry winter)), with both a warm/cold cycle and a wet/dry cycle through the year. February is typically the warmest month, averaging 25.6°C, while August is the coldest at 19.8°C. Annual precipitation averages around 1346mm, concentrated mostly in the wet season.
Monthly climate normals (2016–2025) - bar colour and height show average temperature, the shaded area shows average monthly precipitation.
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Long-Term Trends
Combined Timeline – New Caledonia
Precipitation, Sunshine, Frost and Snow are converted to standard deviations from their own average so they can share an axis with Temperature.
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Heatwave Days – New Caledonia
Warm Spell Duration Index (WSDI) - days in a 6+ day run above the local 90th-percentile temperature for that time of year.
Data: World Bank Climate Change Knowledge Portal (ERA5-derived). Refreshed roughly 1-2x/year, ~7-8 months behind present.
Year-on-Year Trends
The 4byo Climate Helix – New Caledonia
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Monthly Temperature – New Caledonia
Latest month is provisional and may be revised by the data provider in the next update cycle.
Background lines show the last 40 years (plus the record year and its opposite, wherever they fall).
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Records – New Caledonia
Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP) - Anomalies vs 1901-2000 mean
Shifting Seasons
Warm/cold + wet/dryKöppen Af · TropicalNew Caledonia has both a clear warm/cold cycle (±2.9°C) and a wet/dry cycle (4× wet:dry ratio). Both sides of the annual rhythm are shown below.
Monthly precipitation climatology. A “wet month” exceeds the baseline monthly mean (dashed gold line). Biggest month-to-month shift: Mar (-109 mm, -37%).
Data: Our World in Data / NOAA (precipitation: GPCC (DWD); frost: World Bank CCKP).
Emissions & Energy
Explore
Explore Climate Data
Data Sources
Data Sources for New Caledonia
Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) - see the Methodology & Sources page for the complete dataset list and update calendar.
Country-level temperature anomaly, sourced from Copernicus ERA5 and Hadley HadCRUT5.
Annual country and global CO₂ emissions, from the Global Carbon Project.
Monthly rainfall - Global Precipitation Climatology Centre (DWD) preferred, World Bank CCKP/CRU TS fallback where GPCC lacks direct coverage.
Frost Days and Heatwave Days (Warm Spell Duration Index), ERA5-derived. World Bank Climate Change Knowledge Portal.
Monthly snow water-equivalent, Global Precipitation Climatology Centre (DWD).
FAQs
FAQs
How is the climate in New Caledonia changing?
New Caledonia is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The headline panel also shows the long-term trend rate per decade and the warmest and coolest years on file.
What is the climate like in New Caledonia?
New Caledonia has a tropical climate (Köppen Aw: Tropical savanna (dry winter)), with both a warm/cold cycle and a wet/dry cycle through the year. February is typically the warmest month, averaging 25.6°C, while August is the coldest at 19.8°C. Annual precipitation averages around 1346mm, concentrated mostly in the wet season.
Where does the climate data for New Caledonia come from?
Climate data for New Caledonia comes from Our World in Data, sourcing Copernicus ERA5 and HadCRUT5 (national temperature anomaly) and the Global Carbon Project via Our World in Data (CO₂ emissions), refreshed every month, when the upstream temperature and rainfall data are refreshed.
What is the climate baseline used on this page?
Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.
Which areas does the New Caledonia climate data cover?
The New Caledonia climate profile covers Nouméa, Mont-Dore, Dumbéa, Paita and surrounding areas. Temperature, rainfall and emissions data for New Caledonia
How often is the New Caledonia climate update refreshed?
The New Caledonia climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.
What counts as a Heatwave Day on the New Caledonia climate page?
Heatwave Days use the Warm Spell Duration Index (WSDI) - the WMO/ETCCDI-standard heatwave measure: days that are part of a run of 6 or more consecutive days above the local 90th-percentile temperature for that calendar day. The 90th-percentile threshold varies by time of year (a hot day in January is judged differently to one in July) but is fixed to the 1961-1990 baseline for every year shown - it does not shift as the climate warms, which is why Heatwave Days trend upward over time.
Does the New Caledonia climate page include frost and snow data?
Yes. Frost Days (days with a minimum temperature below 0°C, World Bank CCKP) and snow water-equivalent (GPCC) are shown alongside temperature and precipitation, each measured against the 1961-1990 baseline where a like-for-like historical comparison is available.