How to Set Your Google Ads to Run During Specific Hours (UK Hourly Scheduling Guide 2026)

The short answer

To set Google Ads to run during specific hours, open your campaign, click Schedules in the left-hand menu, hit the blue pencil icon, then add a time block (e.g. 9:00am-5:00pm) for the days you want. Save and Google will only enter auctions inside those windows. You can set up to six time blocks per day, in 15-minute increments, and optionally apply bid adjustments from -90% to +900% per block.

That covers the mechanics. The harder question is which hours actually convert for your business - and Ben has reviewed enough UK accounts to know that "always-on" is rarely the right answer for service businesses or lead-gen.

What hourly scheduling actually does

Hourly scheduling controls two things: when your ads are eligible to enter the auction, and how aggressively you bid in each time block. Outside those windows your ads simply don't show - no impressions, no clicks, no spend.

By default, every new Google Ads campaign runs 24 hours a day, every day. That's fine for ecommerce. It's a slow leak for plumbers, solicitors, accountants, B2B SaaS - anyone who can't action a lead at 2am.

Step-by-step: setting Google Ads to run during specific hours

1. Sign in to your Google Ads account at ads.google.com.
2. Click Campaigns in the left navigation, then click the campaign you want to schedule.
3. In the campaign sub-menu, click Schedules (under "Audiences, keywords and content" in the new UI).
4. Click the blue pencil icon next to "Ad schedule".
5. Click + Schedule to add a new time block.
6. Choose the day(s) - individual days or grouped options like "Monday-Friday".
7. Set the start time and end time in 15-minute increments (e.g. 09:00 to 17:30).
8. Optionally apply a bid adjustment for that hour block.
9. Repeat for each time block you want active during the day.
10. Click Save.

The schedule takes effect immediately. You can edit or delete time blocks at any time without resetting the campaign's learning phase.

Splitting the day into focused windows

You don't have to run one long block. A common setup:

• 09:00-12:00 (morning intent)
• 13:00-17:00 (afternoon intent, skipping lunch dead zone)
• 18:00-21:00 (evening browsing, lower bid)

That's three blocks per day, well within the six-block-per-day limit, and gives you tight control over how budget is spent across the day.

The 15-minute increment rule

Google Ads only allows hourly schedules in 15-minute steps. You can set 09:15, 09:30, 09:45 or 10:00 - but not 09:20 or 09:37. End times work the same way.

One quirk worth knowing: an end time of 17:00 means your ads stop showing at 17:00 - so the last impression happens at 16:59:59. If you want ads showing through 5pm and turning off at 6pm, set end time to 18:00.

Hourly bid adjustments that move the needle

Hourly scheduling isn't just on/off. Inside any time block you can tell Google to bid more or less. This is where the real efficiency gains hide.

Important: hourly bid adjustments only work on Manual CPC, Enhanced CPC and Maximise Clicks bidding strategies. If you're using Maximise Conversions, Maximise Conversion Value, Target CPA or Target ROAS, Google ignores hour-level bid adjustments - the AI bids in real time based on its own signals. The on/off schedule is still respected.

The UK time-zone trap (BST vs GMT)

Hourly schedules use the account time zone, set when the account was created. If a US-based agency or platform set up your account, your "9am-5pm" schedule could actually be running 2pm-10pm UK time.

Good news: Google automatically handles British Summer Time. If you're on the (GMT+00:00) London time zone, you don't need to re-edit schedules in March and October.

How to find your best hours with data (not guesses)

Don't pick hours based on what "feels right". Pull the data first.

The Hour of day report

1. Open the campaign.
2. Click Insights and reports > When and where ads showed > Hour of day.
3. Set the date range to at least 90 days.
4. Add columns: Conversions, Cost, Conv. rate, Cost/conv, ROAS.
5. Sort by Cost/conv ascending - those are your most efficient hours.
6. Sort by Conv. rate descending - those are your highest-intent hours.

You're looking for the bottom 4-6 hours of the day - the ones with no conversions or CPA 3-5x your average. Those become candidates to pause or apply heavy negative bid adjustments.

Statistical significance matters

One bad afternoon isn't a trend. Ben's rule: don't make hourly scheduling decisions on any time block with fewer than 30 conversions over the lookback window. Below that, it's noise.

Smart Bidding and Performance Max limits

The honest reality of 2026: most accounts now run on Smart Bidding (Target CPA, Target ROAS, Max Conversions). On those bid strategies, hour-level bid adjustments are ignored. The on/off schedule still works - if you set ads to run only 9am-5pm, they only run 9am-5pm. But you cannot bid +30% during the lunch hour on a Target ROAS campaign.

Two workarounds:

• Seasonality adjustments (Tools > Shared Library > Seasonality Adjustments) for short, planned demand spikes - useful for events but not ongoing hourly tuning.
• Separate campaigns by time of day - one campaign with budget and tCPA tuned for business hours, another for evenings. More setup work, but the only way to truly differentiate bidding by hour on Smart Bidding.

Performance Max takes this even further: you can set on/off windows but lose nearly all hour-level control. PMax accounts for over 60% of new advertiser spend (Search Engine Land 2024), but for granular hourly logic, Standard Search remains the better tool.

Common hourly scheduling mistakes that waste budget

1. Cutting hours based on CPC, not CPA

The cheapest hour is usually 3am - that doesn't make it profitable. Always optimise on cost per conversion or ROAS, never CPC.

2. Hard-cutting lunch hours

"Nobody searches at lunch" is a myth in most industries. People absolutely search and convert during their lunch break - especially B2C. Check the data before pausing 12-1pm.

3. Stacking too many negative bid adjustments

Bid adjustments compound. -50% hour + -50% mobile + -50% audience = your effective bid is 12.5% of your starting bid. You don't enter the auction at all. Always check final stacked bids.

4. Forgetting bid adjustments don't work on Smart Bidding

Setting +50% on Wednesday afternoons feels productive. On a Target ROAS campaign, Google ignores it entirely. Either switch the strategy or use seasonality adjustments instead.

5. Pausing campaigns instead of editing the schedule

Pausing a Smart Bidding campaign resets its learning. Setting a -100% schedule keeps the campaign technically active and preserves bidding signals. For overnight pauses on Smart Bidding, schedule edits beat manual pause/unpause cycles.

Industry-specific hourly windows that work

Starting points only - always validate with your own Hour of day report.

B2B / professional services

09:00-17:30, +25% bid 10:00-12:00 and 14:00-16:00. Heavy negative or off 18:00-08:00.

Home services (plumbers, electricians, roofers)

07:00-21:00, +30% bid 07:00-09:00 (emergency morning calls), neutral the rest. Don't kill evening searches - emergencies happen at 8pm.

Ecommerce

Run 24/7. +20% during 12:00-14:00 and 19:00-22:00 (peak browsing). -30% 02:00-06:00 if conversion data supports it. Pausing usually loses more than it saves.

Local restaurants / bookings

Heavy bids in the 2-3 hours before the meal occasion. +50% 17:00-19:00 for dinner reservations. Off 23:00-09:00 unless data shows late-night bookings.

Lead-gen with sales callbacks

Hard limit: only run during hours someone can call back within 5 minutes. The 21x qualification stat is the cleanest argument for tight hourly windows in lead-gen.

Advanced hourly tactics

Hour + audience layering

Existing customers convert any time. Cold prospects convert mostly in business hours. Layer audience bid adjustments on top of hourly schedules to bid differently per audience per hour.

Separate campaigns by daypart

For high-spend accounts, instead of one campaign with bid adjustments, run two: one for "business hours" and one for "evenings", each with different budgets, ad copy ("Speak to us now" vs "Get a callback tomorrow") and landing pages.

Seasonality adjustments for short windows

For 1-7 day expected lifts (a launch, a TV slot, a flash sale), use seasonality adjustments instead of bid adjustments. Tells Smart Bidding to expect a temporary lift in conversion rate without disrupting the bid strategy's learning.

Use phone-call extensions to enforce the schedule

Pair hourly scheduling with call extensions that only show during your call hours. Set call extension scheduling separately so the phone number disappears outside your callback windows - reduces wasted form-fills overnight.

How Ben uses hourly scheduling in the 90-Day Revenue Takeover

Phase 1 always pulls the Hour of day report across 90+ days. Phase 2 trims the worst-performing 4-6 hours and adds +20-30% bids to the top 2-3 hours (where the bid strategy allows). Phase 3 layers audience and device adjustments. Across 250+ accounts, hourly scheduling refinement alone delivers an average 22% lower CPA within 60 days - before any copy, landing page or bid strategy changes.