Guarulhos, São Paulo, Brazil

Does it frost in Guarulhos?

No. Across 29 years of daily minimum temperatures for this location, not one night reached freezing — not at the light-frost threshold, and so not at any of the colder ones either. There is no last spring frost here to plant after and no first autumn frost to harvest before.

Frost nights on record

None

In all 29 years of the record.

Coldest night ever recorded

2.7°C (36.8°F)

The single lowest reading in the record.

Margin above freezing

2.7°C (4.8°F)

How far the record low still sat above 0°C.

How close it has come

"Never" is worth more when you can see the margin. The coldest night in the entire record for Guarulhos reached 2.7°C (36.8°F), which is still 2.7°C (4.8°F) above freezing. That is the one-in-a-generation night, not a typical one.

The cold end of the record. A frost would need the first row to reach 0°C; it never has.
Measure	Temperature	What it means
Coldest night on record	2.7°C	The lowest single reading in 29 years.
Coldest night of an average year	5.9°C	Each year has a coldest night; this is their average. It is the figure the hardiness zone is built from.
Coolest month's average night	12°C	An ordinary night in the coolest part of the year.

The gap between those first two rows — 3.2°C (5.8°F) — is how much colder the exceptional year runs than the average one. A wide gap means the record is carried by rare events; a narrow one means the climate here simply does not reach freezing.

The nearest place that does freeze

The closest town in this dataset with frost in its record is Bauru, about 289 km away, where the last spring frost typically falls around 17 July. At that distance frost is not a local risk to plan around. It is context for how unusual a frost-free climate is, not a warning.

What sets the season instead

Everywhere that freezes, the calendar is written by frost: sow after the last one, harvest before the first. With that constraint gone, the limits here are heat, daylength and rain. No month here averages above 30°C, the warmest being January at about 23.4°C (74.2°F). A frost-free climate that never turns hot is the rare case where the growing year is genuinely open at both ends, and succession sowing can run continuously.

Accumulated warmth is the honest substitute for a season length here: 3,816 growing degree days above 10°C across the full twelve months, because there is no frost to close the count at either end. Elsewhere that total has to be earned between two frost dates.

See what to sow in Guarulhos, month by month →

Every month of the year, above freezing

The last column is the evidence for everything above it: the average number of nights per month at or below 0°C, which is zero in every row.

Mean monthly temperature across the record. Months shown in blue average at least one air frost.

Monthly means and average number of frost nights.
Month	Mean low	Mean high
January	19.3°C	27.5°C
February	19.2°C	27.6°C
March	18.6°C	26.8°C
April	16.6°C	25.4°C
May	13.8°C	23.1°C
June	12.7°C	22.7°C
July	12°C	22.9°C
August	12.7°C	24.7°C
September	14.5°C	26.7°C
October	16°C	27.2°C
November	16.7°C	26.8°C
December	18.3°C	27.6°C

Figures are derived from NASA POWER daily minimum and maximum temperatures at this location. A frost night is counted whenever the daily minimum reaches 0°C or below. See how these numbers are worked out.

Nearby

Compare with places close by

São Paulo Zone 10b 14 km No reliable frost Campinas Zone 11a 82 km No reliable frost