Grundsund tides
Today, Thursday, October 29, 2026 · local time (CET) · Västra Götaland, Sweden- 6:08 am0.5 ft
- 6:55 pm0.7 ft
- 11:43 am-0.2 ft
- Tide now
- 0.4 ft ↑ rising · high 6:08 am (0.5 ft)
- Coefficient
- 69 · low coefficient
- Range today
- 0.9 ft
Today there are high tides at 6:08 am (0.5 ft) and 6:55 pm (0.7 ft) and low tide at 11:43 am. Tide coefficient 69. Right now the tide is rising toward the high tide at 6:08 am. In Grundsund the tide is semidiurnal: two high and two low tides a day, of similar height. The next spring tides: from November 9 to 11.
Today's high and low tides
- ▲ Next high tide 6:08 am 0.5 ft · coef. 69
- ▼ Low tide 11:43 am -0.2 ft
- ▲ High tide 6:55 pm 0.7 ft · coef. 68
↑ Rising The tide is rising. 1 h 27 min to high tide at 6:08 am.
Tide coefficient 69 for the 6:08 am high tide and 68 for the 6:55 pm high tide. Low coefficient. The water rises and falls 0.9 ft between the highest high and the lowest low: an average range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?
Heights above mean sea level. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation.
Tides for the next 7 days
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Thu 29 | 7:22 am · 4:33 pm | High tide 6:08 am · 0.5 ft | Low tide 11:43 am · -0.2 ft | High tide 6:55 pm · 0.7 ft | — | Coef. 69 | 85% | Major periods 1:38 am · 2:10 pm | High |
| Fri 30 | 7:24 am · 4:31 pm | Low tide 12:24 am · -0.1 ft | High tide 7:08 am · 0.5 ft | Low tide 12:45 pm · -0.2 ft | High tide 7:57 pm · 0.7 ft | Coef. 67 | 76% | Major periods 2:42 am · 3:14 pm | Medium |
| Sat 31 | 7:27 am · 4:28 pm | Low tide 1:26 am · -0.1 ft | High tide 8:13 am · 0.5 ft | Low tide 1:54 pm · -0.3 ft | High tide 9:08 pm · 0.6 ft | Coef. 69 | 66% | Major periods 3:45 am · 4:15 pm | Medium |
| Sun 1 | 7:29 am · 4:26 pm | Low tide 2:34 am · -0.2 ft | High tide 9:22 am · 0.5 ft | Low tide 3:07 pm · -0.4 ft | High tide 10:26 pm · 0.6 ft | Coef. 75 | Last quarter | Major periods 4:44 am · 5:12 pm | Low |
| Mon 2 | 7:31 am · 4:24 pm | Low tide 3:45 am · -0.2 ft | High tide 10:32 am · 0.5 ft | Low tide 4:29 pm · -0.5 ft | High tide 11:40 pm · 0.6 ft | Coef. 82 | 43% | Major periods 5:38 am · 6:04 pm | Medium |
| Tue 3 | 7:34 am · 4:21 pm | Low tide 4:57 am · -0.3 ft | High tide 11:40 am · 0.5 ft | Low tide 5:55 pm · -0.5 ft | — | Coef. 84 | 33% | Major periods 6:28 am · 6:52 pm | Medium |
| Wed 4 | 7:36 am · 4:19 pm | High tide 12:44 am · 0.6 ft | Low tide 6:04 am · -0.3 ft | High tide 12:44 pm · 0.6 ft | Low tide 7:05 pm · -0.5 ft | Coef. 85 | 23% | Major periods 7:14 am · 7:37 pm | Medium |
▲ high tide · ▼ low tide · heights above mean sea level. Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Tide coefficient and range in October
The biggest tides of the month came from October 5 to 7 (coefficient 88, 1.2 ft range). The smallest, from October 14 to 15 (coefficient 49, 0.7 ft).
Type of tide
In Grundsund the tide is semidiurnal: two high and two low tides a day, of similar height. Types of tides
2026 extremes: the highest tide of the year is on January 1 (0.9 ft) and the lowest, on April 26 (-1.2 ft).
Reference levels
- Highest astronomical tide (HAT)0.9 ft
- Mean higher high water (MHHW)0.6 ft
- Mean high water (MHW)0.4 ft
- Mean sea level (MSL)0.0 ft
- Mean low water (MLW)-0.3 ft
- Mean lower low water (MLLW)-0.6 ft
- Lowest astronomical tide (LAT)-1.2 ft
Heights above mean sea level.
Questions about the tides in Grundsund
What time is high tide today in Grundsund?
High tide today is at 6:08 am (0.5 ft) and 6:55 pm (0.7 ft). Low tide is at 11:43 am.
What time is high tide tomorrow in Grundsund?
On Friday, October 30, high tide at 7:08 am and 7:57 pm and low tide at 12:24 am and 12:45 pm.
What is today's tide coefficient?
69: low coefficient. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides.
When are the next spring tides?
From November 9 to 11, after the new or full moon.
How many tides a day are there in Grundsund?
The tide is semidiurnal: two high and two low tides a day, of similar height. Each high tide comes about 50 minutes later than the day before.
What are the heights measured from?
From mean sea level. That is why a low tide can be negative: that day the water drops below that zero.
Can I use these tides for navigation?
No. They are astronomical predictions for planning fishing and outings; for navigation use official publications and nautical charts.
More about Grundsund today
Tides near Grundsund
- Kungshamn ▲ 6:06 am
- Grebbestad ▲ 7:19 am
- Skagen ▲ 7:03 am
- Strömstad ▲ 6:12 am
- Skjærhalden ▲ 6:14 am
- Jerup ▲ 7:32 am
Each place with its own tide station; next to it, the time of its first high tide today.
Learn more
Grundsund has no station of its own, so we use the tide at Brofjorden Sjov (TICON-4), 8.6 mi away. On the open coast the difference is usually a few minutes and inches; inside estuaries, rivers and enclosed bays it can be much larger. Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data