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Cadiz weather by month: averages, rainfall & climate trends

Cadiz has well-marked seasons, with 12.0°C between its warmest and coolest monthly means. The warm months are largely dry. Most of the year's rain arrives between October and April. Cadiz weather by month: average temperatures, rainfall, records and how the climate has changed since 1940.

Today vs average

−0.5°Chigh near average

22° / 21°Today
23° / 18°Average
see today in detail →

How it's changed

+1.0°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–4921days above 30°C a year now (2016–2025) · 12 in the 1940sdays above 30°C · 12 in the 1940s+1.0°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 86 mmhigh 15°low 10°February, rain 77 mmhigh 16°low 10°March, rain 79 mmhigh 17°low 12°April, rain 58 mmhigh 19°low 13°May, rain 33 mmhigh 21°low 16°June, rain 10 mmhigh 24°low 19°July, rain 2 mmhigh 27°low 21°August, rain 4 mmhigh 28°low 21°September, rain 25 mmhigh 26°low 20°October, rain 78 mmhigh 22°low 17°November, rain 95 mmhigh 18°low 13°December, rain 103 mmhigh 16°low 11°wettest month December, 103 mm · 650 mm a yearsee month by month →

Right now

What it's doing today vs the historical average for this date.
Clear

Right now

22.1°

24°feels like
78%humidity
18°dew point
11 km/hfrom W
UV index4.8
sunrise08:29sunset19:53day length11h 24m
TodayMostly clear22°21°
TueMostly clear26°21°
WedMostly clear26°22°
ThuMostly clear26°22°
FriClear24°22°
SatOvercast25°19°
SunShowers22°18°

On this date: October 12

Today (forecast)
22° / 21°
Average for October 12
23° / 18°

High near average · −0.5°C

  • Record high: 28.6° · 2017
  • Record low: 13.1° · 1960
  • One year ago: 25° / 19°

Every October 12 in history, coldest to hottest

▲ Daily highs▼ Daily lows

Dots show daily highs (top) and lows (bottom) for each October 12 on record (n = 87). Outlined dots are today's forecast.

Area we sample

Each city's history comes from one ERA5 grid cell, about 28 km across, shown by the dashed box. Near mountains or coasts, conditions can vary across the cell.

Location & data

Historical weather for Cadiz is sampled from the ECMWF ERA5 reanalysis at 36.53°N, 6.29°W, with daily records since 1940.

Coordinates
36.53°N, 6.29°W
Time zone
Europe/Madrid
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

29 of the last 31 days were warmer than the historical average for that date. Average difference: +2.3°C.

Each bar is one day, from morning low to afternoon high. Warm-colored bars are days whose mean ran above average; cool bars ran below. The dot inside the bar is the daily mean. The shaded band is the typical 10–90% range expected for that date. Average = the day's mean temperature averaged across every year of record (1940–2026) for that calendar date.

This date over the years

One dot per year, showing the mean temperature on this calendar date. Dots are warmer or cooler than the long-term average (dashed line); the shaded band is the typical 10–90% range, and the highlighted dot is today's forecast. Based on ERA5 reanalysis: modelled estimates, not station readings.

Weather by month

Average temperatures and rainfall for each month: a typical year, from the full record.

Climate overview

The year peaks in August, at around 27.6°C by mid-afternoon, with nights around 21.2°C. In a typical recent year, around 20 days reach 30°C or more. The coolest month is January, when afternoons reach about 15.1°C and overnight lows sit around 9.9°C. Frost is essentially unknown.

Cadiz picks up roughly 650 mm a year, with a peak of 103 mm in December and as little as 2 mm in July.

Comparing the record's first decade with its most recent one, Cadiz now averages 1.0°C warmer than it did in the 1940s. The last decade has also run drier, about 18% below the long-term precipitation average.

Climate graph (climograph)

August is the warmest month, January the coolest: a yearly swing of 12°C. Wettest month: December (~103 mm). Whole year averages ~650 mm of rain.

Bars = average monthly rainfall (right axis). Lines = average daily high and low (left axis). Average = each month's value averaged across every year of record (1940–2026).

Rainy days by month

About 56 rainy days a year: most in December (~8), fewest in July (almost none).

Bars = average number of days with ≥ 2 mm per month. Hover for the monthly rainfall total.

Monthly wind

Average daily peak wind at 10 m, by month.

Monthly solar energy

Average daily incoming solar energy in megajoules per square metre: the record's own proxy for how sunny the month is.

Cadiz month by month: what to expect

Typical conditions for each month, averaged across the full record (since 1940). Daylight is the time from sunrise to sunset. Record high/low are the most extreme values in the ERA5 dataset (modelled since 1940), so they can differ from official weather-station readings.

MonthAvg highAvg lowRainRainy daysDaylightRecord highRecord low
January15.1°9.9°86 mm89.8 h21.6° (2024)1.4° (2005)
February15.7°10.5°77 mm710.7 h22.2° (1987)0.5° (1954)
March17.2°11.8°79 mm711.7 h25.1° (1998)5.0° (1993)
April18.7°13.3°58 mm612.9 h30.0° (1945)7.9° (1986)
May21.3°15.6°33 mm413.9 h35.0° (2012)7.9° (1951)
June24.4°18.6°10 mm114.5 h36.5° (2017)13.3° (1984)
July27.3°20.8°2 mm014.3 h37.6° (1941)16.3° (1978)
August27.6°21.2°4 mm013.4 h35.1° (2025)16.5° (1977)
September25.5°19.8°25 mm212.2 h34.0° (2016)14.3° (1974)
October22.3°17.0°78 mm611.0 h29.5° (1970)9.3° (1966)
November18.5°13.3°95 mm710.0 h25.7° (1945)5.3° (1943)
December15.9°10.9°103 mm89.5 h22.1° (2010)3.0° (1967)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +1.0°C.

Each vertical stripe is one year. Color encodes how much that year's annual mean differed from the long-term average. Average = each year's annual mean compared to the average of all years (1940–2026). cooler ← → warmer

Annual mean temperature

Long-term trend: +0.14°C per decade.

One point per year, showing the temperature averaged across the whole year. The dashed line is the least-squares long-term trend. Based on ERA5 reanalysis: modelled estimates, not station readings.

Seasonal warming

Dec–Feb is warming fastest: +0.16°C per decade.

Each faint line is one three-month period's average per year; the bold dashed line is its long-term trend. Different parts of the year often warm at different rates. Based on ERA5 reanalysis: modelled estimates, not station readings.

Hot days vs frost days

Days ≥ 30°C per year: 11.7 early in the record → 21.4 recently. Frost days: 0 → 0.

Thin lines are raw yearly counts; thick lines are the smoothed trend that removes year-to-year noise. The hot-day threshold is auto-picked per city so the line actually moves. Average = a centered 5-year rolling average to smooth weather noise.

Yearly hot & cold extremes

All-time high in 1941, all-time low in 1954: 37.6°C / 0.5°C.

One point per year: the single hottest and coldest day recorded that year.

Annual rainfall

~650 mm/year on average. Last decade: −18% vs that average. Long-term trend: −13 mm per decade.

One bar per year of total rainfall. Dashed line is the long-term average. Average = the average annual rainfall across every year of record (1940–2026).

Day-by-day grid

Each tiny square is one calendar day across the full record, about 30,000 days per city. Use the mode switch above the chart: Anomaly colors each day by how far it ran from the historical average for that date (red = warmer, blue = cooler), Daily mean temp shows the absolute mean temperature for the day (useful to see seasons and heatwaves), and Precipitation shows daily rainfall (useful to spot wet/dry seasons and droughts). Average = the long-term average for that calendar date (1940–2026).

Frequently asked questions about Cadiz

Which is the warmest month in Cadiz?
On long-term average, the warmest month in Cadiz is August (mean daily temperature of about 24.4°C) and the coolest is January (about 12.4°C).
How does today's temperature in Cadiz compare to the historical average?
On October 12, 2026, Cadiz is forecast to reach a high of 22.2°C and a low of 20.5°C. The long-term average for this date (the full record since 1940) is a high of 22.7°C and a low of 17.6°C, so today's high is about equal to that average.
How much has Cadiz warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in Cadiz is about 1.0°C warmer.
How much does it rain in Cadiz?
Cadiz receives about 650 mm of precipitation per year on long-term average, with December typically the wettest month.
What is the average temperature in Cadiz?
Over the full record (since 1940), the annual mean temperature in Cadiz is about 18.0°C. The warmest month is August and the coolest is January.
What are the average temperatures in Cadiz by month?
Average daily highs and lows for each month in Cadiz (°C, full record since 1940): January 15°/10°, February 16°/10°, March 17°/12°, April 19°/13°, May 21°/16°, June 24°/19°, July 27°/21°, August 28°/21°, September 26°/20°, October 22°/17°, November 18°/13°, December 16°/11°.
What is the weather like in Cadiz in summer?
June to August is summer in Cadiz, and it is dry and warm. It warms from 24°C by day and 19°C at night in June to 28°C and 21°C in August. Hardly any rain falls.
What is the weather like in Cadiz in winter?
Winter in Cadiz (December to February) is fairly mild. Expect 15–16°C by day and 10–11°C at night, with January the coldest month. Rain is steady at around 89 mm a month, spread over roughly 7 days. It is the wettest season of the year.
What is the weather like in Cadiz in spring?
Spring in Cadiz (March to May) is mild. March is still 17°C in the afternoon and 12°C at night, May already 21°C and 16°C. Rain falls off from 79 mm on 7 days in March to 33 mm on 4 days in May.
What is the weather like in Cadiz in autumn?
In autumn, September through November, Cadiz is pleasantly warm. It cools from 26°C by day and 20°C at night in September to 18°C and 13°C in November. Rain picks up through the season: 2 rainy days and 25 mm in September, 7 days and 95 mm in November.
How many days a year does it rain in Cadiz?
On long-term average, Cadiz has about 56 days a year with at least 2 mm of rain or snow. The annual total is roughly 650 mm.

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