Tijuana weather in September
In September, Tijuana has an average high of 30 °C87 °F and an average low of 18 °C65 °F, with about 6 mm0.2 in of precipitation. It is the 3rd warmest month of the year and ranks 10th for precipitation.
How September compares with other months
Compared with August, September is 0.7 °C1.3 °F cooler on average. Compared with October, September is 3.3 °C5.9 °F warmer on average and drier by 9 mm0.3 in. Daylight lasts about 12.3 hours around the middle of the month. Average relative humidity is 57% and the average cloud amount 59%.
Is September a good time to visit Tijuana?
September is not among the most comfortable months by our comfort score: it is hot (average high 30 °C87 °F). The most comfortable months in Tijuana are October–June.
What to wear in September
For Tijuana in September, pack very light, breathable clothing, a sun hat and plenty of water.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Tijuana | 3087 | 1865 | 60.2 |
| San Diego | 3187 | 1966 | 60.2 |
| El Cajon | 3492 | 1966 | 70.3 |
| Escondido | 3392 | 1966 | 70.3 |
| Ensenada | 2882 | 2067 | 60.2 |
| Oceanside | 2576 | 1966 | 50.2 |
| Temecula | 3595 | 1865 | 70.3 |
| Murrieta | 2781 | 1762 | 50.2 |
| Mexicali | 40104 | 2476 | 80.3 |
Nearby places that are more than 1 °C1.8 °F warmer in September: El Cajon, Escondido, Temecula and Mexicali; cooler: Oceanside and Murrieta.
Other months in Tijuana
- January19 °C66 °F / 10 °C49 °F
- February19 °C66 °F / 10 °C50 °F
- March21 °C69 °F / 11 °C51 °F
- April22 °C72 °F / 12 °C53 °F
- May24 °C75 °F / 13 °C55 °F
- June27 °C81 °F / 15 °C59 °F
- July31 °C87 °F / 18 °C65 °F
- August31 °C88 °F / 19 °C66 °F
- September30 °C87 °F / 18 °C65 °F
- October26 °C79 °F / 16 °C60 °F
- November22 °C72 °F / 13 °C55 °F
- December19 °C65 °F / 10 °C49 °F
Frequently asked questions
How warm is Tijuana in September?
In September the average high in Tijuana is 30 °C (87 °F) and the average low is 18 °C (65 °F).
Does it rain a lot in Tijuana in September?
On average about 6 mm (0.2 in) of precipitation falls in September; it ranks 10th of the 12 months.
Is September the warmest month in Tijuana?
No. The warmest month in Tijuana is August, with an average high of 31 °C (88 °F). The coldest month is December, with an average low of 10 °C (49 °F).
How long is the day in Tijuana in September?
In the middle of September the day in Tijuana lasts about 12.3 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Tijuana in September?
The average relative humidity in September is about 57%. This is a long-term average for the whole day.
How cloudy is Tijuana in September?
On average about 59% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 394 m, while Tijuana lies at about 97 m. Temperatures on this page were therefore adjusted by +1.9 °C3.5 °F using the standard lapse rate of 6.5 °C per 1,000 m.