São Luís weather in 2023
São Luís weather in 2023, with 365 daily observations from Open-Meteo archive data.
Interactive graph
Open São Luís in the interactive graph
Use the graph view to inspect 2023 alongside other available years for São Luís.
Year summary
In 2023, São Luís averaged 30.6 C for daily highs and 24.4 C for daily lows.
A 1991-2020 normal is not available for this location yet, so this page compares 2023 with the 2023-2025 archive baseline. The 2023 average daily high was -0.2 C from that baseline, and total precipitation was +20.4 mm from the baseline total.
The warmest month was September, with an average high of 32.7 C, while March had the lowest average low at 23.3 C.
The wettest month was March, totaling 468.6 mm. The hottest day reached 34.7 C on September 5, 2023.
Monthly averages and precipitation
| Month | Avg low C | Avg high C | Rain and snow mm | Days |
|---|---|---|---|---|
| January | 23.4 | 29.2 | 280.5 | 31 |
| February | 23.6 | 28.9 | 313.2 | 28 |
| March | 23.3 | 28.5 | 468.6 | 31 |
| April | 23.5 | 29.2 | 382.0 | 30 |
| May | 24.1 | 29.9 | 183.2 | 31 |
| June | 23.6 | 29.9 | 175.9 | 30 |
| July | 24.3 | 31.1 | 58.9 | 31 |
| August | 24.6 | 31.4 | 40.9 | 31 |
| September | 25.3 | 32.7 | 32.2 | 30 |
| October | 25.6 | 32.2 | 43.9 | 31 |
| November | 25.9 | 32.2 | 39.4 | 30 |
| December | 25.5 | 31.6 | 137.3 | 31 |
Daily records in 2023
| Record | Date | Value |
|---|---|---|
| Hottest day | September 5, 2023 | 34.7 C |
| Coldest night | January 30, 2023 | 21.7 C |
| Wettest day | April 1, 2023 | 65.0 mm |
Related pages
Weather data source: Open-Meteo Archive API. City metadata source: GeoNames cities15000.