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Has the climate in Monsanto changed?

Monsanto has cooled about 1°F between 1998 and 2024.

About 0.4°F per decade, measured from Monsanto's official daily weather records, 1998–2024. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Monsanto's climate has warmed more slowly than most other cities in Portugal.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Average temperature
−1.0°F
1970s
60.8°F
Recent
59.8°F
A small downward drift

Monsanto's temperature, year by year

Average temperature for each year from 1998 to 2024.

57°59°61°63°1998: 60.5°F1999: 60.9°F2000: 61.0°F2001: 60.2°F2002: 60.4°F2003: 62.1°F2004: 61.1°F2005: 61.2°F2006: 60.0°F2007: 58.7°F2008: 59.1°F2009: 59.5°F2010: 59.2°F2011: 59.7°F2012: 58.4°F2013: 58.8°F2014: 59.9°F2015: 59.3°F2016: 59.0°F2017: 59.4°F2018: 59.1°F2019: 59.5°F2020: 59.8°F2021: 59.1°F2022: 60.8°F2023: 60.9°F2024: 60.8°Flong-term trend19982000201020202024
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

Methodology & sources

Temperature — 1991–2020 normals computed from 23 years of daily observations at Monte Real, a weather station, about 44 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →