Dammam weather in October
In October, Dammam has daytime highs averaging 34 °C, nights around 24 °C, with 0.2 wet days, and a sea temperature of 30 °C. Figures are 1991–2020 climate normals.
- 34.0°C Average high
- 23.6°C Average low
- 0.2days Wet days
- 1mm Rainfall
- 30.0°C Sea temperature
- 12h Daylight
Daily temperatures through October
How October develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 October | 35.7 °C | 24.6 °C | 0 % |
| 11–20 October | 34.2 °C | 23.7 °C | 0 % |
| 21–31 October | 32.4 °C | 22.7 °C | 1 % |
- Average highs fall from 35.7 °C early in October to 32.4 °C by the end of it.
What to expect
| Measure | Typical October | Share of the month |
|---|---|---|
| Days above 25 °C | 31 of 31 | 100 % |
| Days above 30 °C | 30 of 31 | 96 % |
| Days below 0 °C | 0 of 31 | 0 % |
| Days with more than 1 mm rain | 0.2 of 31 | 1 % |
Conditions in October
| Measure | Average |
|---|---|
| Mean temperature | 29 °C |
| Record high (1991–2020) | 44 °C |
| Record low (1991–2020) | 17 °C |
| Relative humidity | 62 % |
| Wind speed | 20 km/h |
| Cloud cover | 10 % |
Where Dammam ranks in October
| Ranking | Position | Value |
|---|---|---|
| The driest places in South America in October | 4th of 50 | 0.8 mm |
| The driest places in Asia in October | 12th of 50 | 0.8 mm |
| Warmest sea temperatures in Asia in October | 13th of 50 | 30 °C |
| The warmest places in South America in October | 15th of 50 | 34 °C |
| Warmest sea temperatures in the world in October | 16th of 50 | 30 °C |
| The driest places in the world in October | 23rd of 50 | 0.8 mm |
October compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| August | 39.9 °C | under 1 mm | 7 % |
| September | 38.0 °C | under 1 mm | 3 % |
| October | 34.0 °C | 1 mm | 10 % |
| November | 27.2 °C | 18 mm | 24 % |
| December | 21.9 °C | 20 mm | 29 % |
See all twelve months for Dammam
- October is the 6th warmest month here.
- It is the 6th driest month of the year.
- It ranks 5th for least cloud cover.
- Days last about 12 hours from sunrise to sunset.
- It rains on 0.2 of 31 days — 1 % of the month.
- Nights are about 10 °C cooler than the middle of the day.
- The hottest October day on record since 1991 reached 44 °C, 10 °C above the usual daytime high.
- Beach score: 75 / 100 — see how this is calculated.
QuestionsOctober in Dammam, answered
How warm is Dammam in October?
Daily highs average 34 °C and nights fall to about 24 °C, a spread of 10 °C between afternoon and dawn. That makes October the 6th warmest month of the year here.
Does it rain much in Dammam in October?
October averages 1 mm of rain, spread over about 0 of the 31 days — 1 % of the month. Cloud cover averages 10 % of the sky.
Is the sea warm enough to swim in October?
The sea averages 30 °C off Dammam in October. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.
How long are the days in October?
Dammam averages 12 hours between sunrise and sunset in October. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.