September weather - Autumn 2023

Weather in September
Frequently asked questions
Average temperature in September
Average pressure in September
Average wind speed in September
Average humidity in September
Average rainfall in September
Average rainfall days in September
Average sea temperature in September
Average daylight in September
Average sunshine in September
Average sunshine days in September
Average UV index in September
Average cloud cover in September
Average visibility in September

Distant night cityscape of Tijuana in Mexico

Weather in September

September signifies the onset of a slow transition from summer to autumn in Tijuana. Affected by the regular seasonal cycle, temperatures start to drop, though the sea remains warm at 20°C. Rainfall slightly increases up to 8mm, signifying the month's movement toward autumn. Furthermore, the cloud coverage expands slightly, yet the sunshine maintains dominance over the city's sky. Linings of autumn are subtly engraved in the city's weather, yet the comforting summer aurora continues to prevail.

Temperature

Entering September, Tijuana's average high-temperature reads a still warm 26.7°C, indicating a close resemblance to the previous month's climate. Throughout September, an average low-temperature of 18.6°C is expected.

Humidity

The average relative humidity in September is 62%.

Rainfall

In Tijuana, Mexico, during September, the rain falls for 4.1 days and regularly aggregates up to 8mm of precipitation. Throughout the year, in Tijuana, there are 57.3 rainfall days, and 215mm of precipitation is accumulated.

Sea temperature

August and September, with an average sea temperature of 20°C, are months with the warmest seawater.
Note: For most, swimming in 20°C is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C to 15°C.

Daylight

The average length of the day in September in Tijuana is 12h and 21min.
On the first day of the month, sunrise is at 6:23 am and sunset at 7:13 pm. On the last day of September, in Tijuana, sunrise is at 6:41 am and sunset at 6:34 pm PDT.

Sunshine

In September, the average sunshine is 10.3h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily high UV index of 6 in September leads to these guidelines:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.

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FAQ

What are September temperatures in Tijuana?

The high-temperature in Tijuana during September is 26.7°C and the low-temperature is 18.6°C. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in August is appraised at 29°C.

What is the average humidity in September in Tijuana?

In Tijuana, the average relative humidity in September is 62%.

How much does it rain in Tijuana in September?

In Tijuana, in September, it is raining for 4.1 days, with typically 8mm of accumulated precipitation.

What are the months with the warmest sea water in Tijuana?

August and September, with an average sea temperature of 20°C, are months with the warmest seawater in Tijuana, Mexico.

What is the sea temperature in September in Tijuana?

In Tijuana, Mexico, the average seawater temperature in September is 20°C. Swimming in 20°C is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C.

How many hours of daylight does Tijuana have in September?

In Tijuana, the average day length in September is 12h and 21min.

When are sunrise and sunset in September in Tijuana?

On the first day of September in Tijuana, Mexico, sunrise is at 6:23 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:34 pm PDT.

How long on average sun shines in September in Tijuana?

In Tijuana, Mexico, the average sunshine duration in September is 10.3h.

When is the highest UV index in Tijuana?

June through September, with an average maximum UV index of 6, are months with the highest UV index in Tijuana, Mexico.

What is the UV index reading in September in Tijuana?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

27.3°C

26.7°C

24.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.1km/h

8.7km/h

8.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

3.2

4.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

24.3

24.8

25.8

Average UV index

Average cloud cover

12%

14%

Average visibility

10km

Average temperature in September
Tijuana, Mexico

Average high temperature in September: 26.7°C

The warmest month (with the highest average high temperature) is August (27.3°C).
The month with the lowest average high temperature is December (17.7°C).

Average low temperature in September: 18.6°C

The month with the highest average low temperature is August (19.4°C).
The coldest months (with the lowest average low temperature) are February and December (10.2°C).

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Average pressure in September
Tijuana, Mexico

Average pressure in September: 1011.7mbar

The month with the highest atmospheric pressure is January (1018.7mbar).
The months with the lowest atmospheric pressure are June and September (1011.7mbar).

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Average wind speed in September
Tijuana, Mexico

Average wind speed in September: 8.2km/h

The windiest month (with the highest average wind speed) is April (9.7km/h).
The calmest month (with the lowest average wind speed) is October (7.4km/h).

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Average humidity in September
Tijuana, Mexico

Average humidity in September: 62%

The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is November (55%).

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Average rainfall in September
Tijuana, Mexico

Average rainfall in September: 8mm

The wettest month (with the highest rainfall) is February (44mm).
The driest month (with the least rainfall) is June (2mm).

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Average rainfall days in September
Tijuana, Mexico

Average rainfall days in September: 4.1 days

The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (1.7 days).

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Average sea temperature in September
Tijuana, Mexico

Average sea temperature in September: 20°C

The best months for swimming (with the highest average sea temperature) are August and September (20°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (15°C).

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Average daylight in September /
Average sunshine in September
Tijuana, Mexico

Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).

Average sunshine in September: 10h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in September
Tijuana, Mexico

Average sunshine days in September: 24.8 days

The month with the most sunshine days is June (28.1 days).
The month with the least sunshine days is February (21 days).

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Average UV index in September
Tijuana, Mexico

Average UV index in September: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in September
Tijuana, Mexico

Average cloud cover in September: 12

The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in September
Tijuana, Mexico

Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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September weather forecast
Tijuana, Mexico

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