September history in Barcelona

Spain · Compare three complete years with the current year to date.

Month

Year

Mean air temperature

24°C

Mean daytime air temperature

26°C

Mean nighttime air temperature

23°C

Maximum air temperature

31°C

Minimum air temperature

18°C

Total precipitation

71.2 mm

Sunny days

Mean sea temperature

26.5°C

Minimum sea temperature

25.9°C

Maximum sea temperature

27.6°C

Maximum wind speed

18.6 km/h

Air temperature (°C)

Daily minimum, mean and maximum

Date	Mean (°C)	Maximum (°C)	Minimum (°C)
2026-09-01	26	29	23
2026-09-02	26	30	22
2026-09-03	26	30	22
2026-09-04	27	31	24
2026-09-05	28	31	24
2026-09-06	28	31	24
2026-09-07	27	30	23
2026-09-08	27	31	24
2026-09-09	23	26	20
2026-09-10	22	26	18
2026-09-11	23	27	20
2026-09-12	24	27	21
2026-09-13	25	29	21
2026-09-14	25	30	21
2026-09-15	26	30	22
2026-09-16	24	27	21
2026-09-17	21	23	20
2026-09-18	21	24	19
2026-09-19	22	26	18
2026-09-20	23	27	19
2026-09-21	25	31	20
2026-09-22	24	27	20
2026-09-23	23	28	19
2026-09-24	23	28	19
2026-09-25	24	28	20
2026-09-26	23	26	19
2026-09-27	23	26	20
2026-09-28	24	26	21
2026-09-29	23	24	22
2026-09-30	24	26	21

Sea temperature (°C)

Daily sea-surface mean

Date	Sea temperature (°C)
2026-09-01	27.0
2026-09-02	26.6
2026-09-03	26.5
2026-09-04	26.5
2026-09-05	26.9
2026-09-06	27.0
2026-09-07	27.0
2026-09-08	27.0
2026-09-09	27.0
2026-09-10	26.7
2026-09-11	26.6
2026-09-12	26.5
2026-09-13	26.5
2026-09-14	26.5
2026-09-15	26.5
2026-09-16	26.6
2026-09-17	26.5
2026-09-18	26.4
2026-09-19	26.4
2026-09-20	26.3
2026-09-21	26.3
2026-09-22	26.3
2026-09-23	26.1
2026-09-24	26.1
2026-09-25	26.1
2026-09-26	26.1
2026-09-27	26.1
2026-09-28	—
2026-09-29	—
2026-09-30	—

Wave height (m)

Daily mean wave height

Date	Wave height (m)
2026-09-01	0.3
2026-09-02	0.2
2026-09-03	0.1
2026-09-04	0.2
2026-09-05	0.2
2026-09-06	0.1
2026-09-07	0.1
2026-09-08	0.2
2026-09-09	1.0
2026-09-10	0.7
2026-09-11	0.3
2026-09-12	0.2
2026-09-13	0.2
2026-09-14	0.2
2026-09-15	0.3
2026-09-16	0.4
2026-09-17	0.5
2026-09-18	0.3
2026-09-19	0.2
2026-09-20	0.2
2026-09-21	0.2
2026-09-22	0.4
2026-09-23	0.3
2026-09-24	0.3
2026-09-25	0.3
2026-09-26	0.4
2026-09-27	0.5
2026-09-28	—
2026-09-29	—
2026-09-30	—

Precipitation (mm)

Daily precipitation total

Date	Precipitation (mm)
2026-09-01	0.0
2026-09-02	0.0
2026-09-03	0.0
2026-09-04	0.0
2026-09-05	0.0
2026-09-06	0.0
2026-09-07	0.0
2026-09-08	0.0
2026-09-09	19.7
2026-09-10	0.0
2026-09-11	0.0
2026-09-12	0.0
2026-09-13	0.0
2026-09-14	0.0
2026-09-15	0.0
2026-09-16	17.5
2026-09-17	10.3
2026-09-18	4.1
2026-09-19	0.0
2026-09-20	0.0
2026-09-21	0.0
2026-09-22	0.0
2026-09-23	0.0
2026-09-24	0.0
2026-09-25	0.0
2026-09-26	0.0
2026-09-27	0.0
2026-09-28	0.0
2026-09-29	18.5
2026-09-30	1.1

Sunshine duration (h)

WMO-defined direct sunshine hours

Date	Sunshine (h)
2026-09-01	9.1
2026-09-02	12.1
2026-09-03	12.2
2026-09-04	12.1
2026-09-05	12.1
2026-09-06	12.2
2026-09-07	12.1
2026-09-08	11.4
2026-09-09	0.0
2026-09-10	12.0
2026-09-11	12.0
2026-09-12	12.0
2026-09-13	12.0
2026-09-14	12.0
2026-09-15	11.9
2026-09-16	9.9
2026-09-17	5.5
2026-09-18	8.2
2026-09-19	10.5
2026-09-20	11.7
2026-09-21	11.8
2026-09-22	11.4
2026-09-23	11.4
2026-09-24	11.3
2026-09-25	11.3
2026-09-26	10.7
2026-09-27	9.2
2026-09-28	7.0
2026-09-29	0.0
2026-09-30	3.7

Humidity (%)

Daily mean relative humidity

Date	Humidity (%)
2026-09-01	71.0
2026-09-02	67.0
2026-09-03	63.0
2026-09-04	76.0
2026-09-05	75.0
2026-09-06	66.0
2026-09-07	80.0
2026-09-08	76.0
2026-09-09	83.0
2026-09-10	60.0
2026-09-11	65.0
2026-09-12	71.0
2026-09-13	66.0
2026-09-14	65.0
2026-09-15	58.0
2026-09-16	73.0
2026-09-17	82.0
2026-09-18	79.0
2026-09-19	73.0
2026-09-20	67.0
2026-09-21	59.0
2026-09-22	71.0
2026-09-23	66.0
2026-09-24	67.0
2026-09-25	74.0
2026-09-26	78.0
2026-09-27	77.0
2026-09-28	75.0
2026-09-29	84.0
2026-09-30	86.0

Wind (km/h)

Daily maximum wind speed

Date	Maximum wind (km/h)
2026-09-01	15.0
2026-09-02	13.8
2026-09-03	16.5
2026-09-04	13.1
2026-09-05	12.8
2026-09-06	11.3
2026-09-07	9.9
2026-09-08	16.6
2026-09-09	11.9
2026-09-10	14.8
2026-09-11	11.9
2026-09-12	13.9
2026-09-13	13.8
2026-09-14	16.7
2026-09-15	12.9
2026-09-16	17.3
2026-09-17	18.6
2026-09-18	16.3
2026-09-19	14.2
2026-09-20	11.2
2026-09-21	12.7
2026-09-22	15.1
2026-09-23	12.1
2026-09-24	15.6
2026-09-25	10.2
2026-09-26	11.8
2026-09-27	10.8
2026-09-28	11.5
2026-09-29	7.2
2026-09-30	6.6

Daily weather values

Source values for September 2026; unavailable readings are shown as gaps.

Date	Conditions	Min / max (°C)	Sea (°C)	Waves (m)	Rain (mm)	Sun (h)	Humidity (%)	Wind (km/h)
2026-09-01	Overcast	23 / 29	27.0	0.3	0.0	9.1	71.0	15.0
2026-09-02	Partly cloudy	22 / 30	26.6	0.2	0.0	12.1	67.0	13.8
2026-09-03	Mostly clear	22 / 30	26.5	0.1	0.0	12.2	63.0	16.5
2026-09-04	Partly cloudy	24 / 31	26.5	0.2	0.0	12.1	76.0	13.1
2026-09-05	Partly cloudy	24 / 31	26.9	0.2	0.0	12.1	75.0	12.8
2026-09-06	Overcast	24 / 31	27.0	0.1	0.0	12.2	66.0	11.3
2026-09-07	Overcast	23 / 30	27.0	0.1	0.0	12.1	80.0	9.9
2026-09-08	Foggy	24 / 31	27.0	0.2	0.0	11.4	76.0	16.6
2026-09-09	Thunderstorm	20 / 26	27.0	1.0	19.7	0.0	83.0	11.9
2026-09-10	Overcast	18 / 26	26.7	0.7	0.0	12.0	60.0	14.8
2026-09-11	Partly cloudy	20 / 27	26.6	0.3	0.0	12.0	65.0	11.9
2026-09-12	Partly cloudy	21 / 27	26.5	0.2	0.0	12.0	71.0	13.9
2026-09-13	Mostly clear	21 / 29	26.5	0.2	0.0	12.0	66.0	13.8
2026-09-14	Partly cloudy	21 / 30	26.5	0.2	0.0	12.0	65.0	16.7
2026-09-15	Mostly clear	22 / 30	26.5	0.3	0.0	11.9	58.0	12.9
2026-09-16	Storm with hail	21 / 27	26.6	0.4	17.5	9.9	73.0	17.3
2026-09-17	Rain showers	20 / 23	26.5	0.5	10.3	5.5	82.0	18.6
2026-09-18	Rain showers	19 / 24	26.4	0.3	4.1	8.2	79.0	16.3
2026-09-19	Overcast	18 / 26	26.4	0.2	0.0	10.5	73.0	14.2
2026-09-20	Overcast	19 / 27	26.3	0.2	0.0	11.7	67.0	11.2
2026-09-21	Overcast	20 / 31	26.3	0.2	0.0	11.8	59.0	12.7
2026-09-22	Overcast	20 / 27	26.3	0.4	0.0	11.4	71.0	15.1
2026-09-23	Partly cloudy	19 / 28	26.1	0.3	0.0	11.4	66.0	12.1
2026-09-24	Overcast	19 / 28	26.1	0.3	0.0	11.3	67.0	15.6
2026-09-25	Overcast	20 / 28	26.1	0.3	0.0	11.3	74.0	10.2
2026-09-26	Foggy	19 / 26	26.1	0.4	0.0	10.7	78.0	11.8
2026-09-27	Overcast	20 / 26	26.1	0.5	0.0	9.2	77.0	10.8
2026-09-28	Overcast	21 / 26	—	—	0.0	7.0	75.0	11.5
2026-09-29	Thunderstorm	22 / 24	—	—	18.5	0.0	84.0	7.2
2026-09-30	Rain showers	21 / 26	—	—	1.1	3.7	86.0	6.6